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Search: id:A005589
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| A005589 |
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Number of letters in the English name of n, excluding spaces and hyphens.
(Formerly M2277)
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+0
40
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| 4, 3, 3, 5, 4, 4, 3, 5, 5, 4, 3, 6, 6, 8, 8, 7, 7, 9, 8, 8, 6, 9, 9, 11, 10, 10, 9, 11, 11, 10, 6, 9, 9, 11, 10, 10, 9, 11, 11, 10, 5, 8, 8, 10, 9, 9, 8, 10, 10, 9, 5, 8, 8, 10, 9, 9, 8, 10, 10, 9, 5, 8, 8, 10, 9, 9, 8, 10, 10, 9, 7, 10, 10, 12, 11, 11, 10, 12, 12, 11, 6, 9, 9, 11
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Diane Karloff observes that repeatedly applying the map k->A005589(k) to any starting value n always leads to 4 (cf. A016037, A133418). - Nov 27, 2007
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Problems Drive, Eureka, 37 (1974), 8-11 and 33.
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LINKS
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Landon Curt Noll, The English Name of a Number.
Eric Weisstein's World of Mathematics, Number
Robert G. Wilson v, English names for the numbers from 0 to 11159 without spaces or hyphens .
Index entries for sequences related to number of letters in n
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EXAMPLE
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Note that A052360(373373) = 64 whereas a(373373) = 56.
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MATHEMATICA
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t={"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen", "twenty", "twentyone", "twentytwo", "twentythree", "twentyfour", "twentyfive", "twentysix", "twentyseven", "twentyeight", "twentynine", "thirty", \
"thirtyone", "thirtytwo", "thirtythree", "thirtyfour", "thirtyfive", "thirtysix", "thirtyseven", "thirtyeight", "thirtynine", "forty", "fortyone", "fortytwo", "fortythree", "fortyfour", "fortyfive", "fortysix", "fortyseven", "fortyeight", "fortynine", "fifty", "fiftyone", "fiftytwo", "fiftythree", "fiftyfour", "fiftyfive", "fiftysix", "fiftyseven", "fiftyeight", "fiftynine", "sixty", \
"sixtyone", "sixtytwo", "sixtythree", "sixtyfour", "sixtyfive", "sixtysix", "sixtyseven", "sixtyeight", "sixtynine", "seventy", "seventyone", "seventytwo", "seventythree", "seventyfour", "seventyfive", "seventysix", "seventyseven", "seventyeight", "seventynine", "eighty", "eightyone", "eightytwo", "eightythree", "eightyfour", "eightyfive", "eightysix", "eightyseven", "eightyeight", "eightynine", "ninety", \
"ninetyone", "ninetytwo", "ninetythree", "ninetyfour", "ninetyfive", "ninetysix", "ninetyseven", "ninetyeight", "ninetynine", "onehundred"}
Table[ StringLength@ t[[n]], {n, 100}] (* Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 04 2007 *)
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CROSSREFS
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Cf. A006944 (ordinals), A052360, A052362-A052363, A134629, A133418, A016037.
Sequence in context: A048853 A011762 A063571 this_sequence A052360 A154913 A154915
Adjacent sequences: A005586 A005587 A005588 this_sequence A005590 A005591 A005592
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KEYWORD
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nonn,word,nice,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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Corrected and extended by Larry Reeves (larryr(AT)acm.org) and Allan Wechsler (acw(AT)alum.mit.edu), Mar 20 2000
Erroneous b-file deleted by N. J. A. Sloane (njas(AT)research.att.com), Sep 25 2008
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