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A177906
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Numbers n such that n^3 divides 6^(n^2)-1.
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0
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1, 5, 1555, 9673655, 24181805, 90993505, 200928005, 28298980055, 36850702555, 62488609555, 141377087255, 150435008905, 367279622065, 2256331679135, 7521049172905, 18802586659555, 24599612913355, 54706615318945
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OFFSET
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1,2
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COMMENTS
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5 divides a(n) for n > 1.
Prime divisors of a(n) in order of their appearance are {5, 311, 6221, 15551, 18198701, 40185601, ...}.
From there on, the list is no more increasing, it continues with 23698201, 90917741, 236192683, 93307, 311021,... - M. F. Hasler, Oct 21 2012
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LINKS
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Table of n, a(n) for n=1..18.
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PROG
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(PARI) is_A177906(n)=Mod(6, n^3)^(n^2)==1 \\ - M. F. Hasler, Oct 21 2012
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CROSSREFS
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Cf. A014946 = Numbers n such that n divides 6^n-1.
Cf. A127106 = Numbers n such that n^2 divides 6^n-1.
Cf. A129211, A129212, A177905, A177907, A127102, A177909, A177243.
Cf. A177911, A177912, A177913, A177914, A177915, A177916, A177917, A177918, A177919, A177920.
Sequence in context: A014377 A165628 A119747 * A127106 A165877 A123658
Adjacent sequences: A177903 A177904 A177905 * A177907 A177908 A177909
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KEYWORD
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nonn
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AUTHOR
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Alexander Adamchuk, May 16 2010
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EXTENSIONS
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More terms from Max Alekseyev, Oct 02 2010
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STATUS
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approved
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