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Search: id:A050987
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| A050987 |
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Number of n-digit left-truncatable primes. |
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+0
12
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| 4, 11, 39, 99, 192, 326, 429, 521, 545, 517, 448, 354, 276, 212, 117, 72, 42, 24, 13, 6, 5, 4, 3, 1
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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Angell, I. O. and Godwin, H. J. "On Truncatable Primes." Math. Comput. 31, 265-267, 1977.
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LINKS
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Index entries for sequences related to truncatable primes
P. De Geest, The list of 4260 left-truncatable primes
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Index entries for sequences related to numbers of primes in various ranges
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CROSSREFS
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Cf. A033664, A024785, A032437, A020994, A024770, A052023, A052024, A052025, A050986.
Adjacent sequences: A050984 A050985 A050986 this_sequence A050988 A050989 A050990
Sequence in context: A149255 A149256 A149257 this_sequence A137191 A106269 A126758
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KEYWORD
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base,nonn,easy,fini,full
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com)
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EXTENSIONS
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Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Mar 13 2007
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