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Search: id:A067484
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| A067484 |
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Powers of 6 with initial digit 6. |
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+0
12
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| 6, 60466176, 609359740010496, 6140942214464815497216, 61886548790943213277031694336, 623673825204293256669089197883129856, 6285195213566005335561053533150026217291776
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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The geometric progression formula a(n)=10077696*a(n-1) does NOT hold if n=20, 40, 59, 79, 98, etc. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 24 2009]
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LINKS
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Tanya Khovanova, Non Recursions
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MAPLE
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A067484 := proc(n) local p6, p, a ; if n = 0 then 6; else p6 := procname(n-1) ; ifactors(p6)[2] ; p := op(2, op(1, %)) ; for a from p+1 do p6 := 6^a ; convert(%, base, 10) ; if op(-1, %) = 6 then RETURN(p6) ; fi; od: fi; end: [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 24 2009]
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CROSSREFS
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Cf. A067480, A067481, A067482, A067483.
Sequence in context: A072234 A115476 A116272 this_sequence A058431 A045518 A058457
Adjacent sequences: A067481 A067482 A067483 this_sequence A067485 A067486 A067487
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KEYWORD
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base,easy,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 09 2002
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EXTENSIONS
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More terms from Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 22 2002
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