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Search: id:A087318
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| A087318 |
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Smallest number of the form n^k +1 with the prime signature of n, or 0 if no such number exists. |
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+0
2
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| 0, 2, 2, 0, 2, 217, 2, 0, 0, 10001, 2, 0, 2, 15, 226, 0, 2, 325, 2, 0, 22, 485, 2, 0, 0, 456977, 0, 0, 2, 27001, 2, 0, 34, 35, 1226, 0, 2, 39, 1522, 0, 2, 130691233, 2, 45, 0, 2117, 2, 0, 0, 0, 2602, 0, 2, 0, 0, 0, 58, 3365, 2, 0, 2, 3845, 0, 0, 4226, 287497, 2, 0, 4762, 24010001
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OFFSET
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2,2
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COMMENT
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If n is an i-th power for i > 1, than a(n) = 0. The other zeros are conjectures. I have checked 12, 20 and 24 for k up to 400; 28, 40, 45, 48, 50, 52, 54, 55, 56, 63 and 68 for k up to 200 and 60 for k up to 100. - David Wasserman (wasserma(AT)spawar.navy.mil), May 09 2005
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CROSSREFS
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Cf. A087319.
Sequence in context: A011218 A028305 A137349 this_sequence A087319 A101348 A141659
Adjacent sequences: A087315 A087316 A087317 this_sequence A087319 A087320 A087321
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 03 2003
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EXTENSIONS
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More terms from David Wasserman (wasserma(AT)spawar.navy.mil), May 09 2005
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