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A014951
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Positive integers n such that n divides 12^n - 1.
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13
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1, 11, 121, 253, 1331, 2783, 5819, 11891, 14641, 30613, 64009, 130801, 133837, 161051, 273493, 336743, 558877, 704099, 768361, 849299, 1438811, 1472207, 1771561, 3008423, 3078251, 3544453, 3704173, 6147647, 6290339, 7745089
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OFFSET
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1,2
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COMMENTS
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Also, the integers n such that n divide s(n), where s(1)=1 and s(k)=s(k-1)+k*12^(k-1).
From Alexander Adamchuk, May 16 2010: (Start)
11 divides a(n) for n>1.
All powers of 11 are terms.
Prime divisors of a(n) in the order of their appearance {11, 23, 47, 3037, 7019, 2663, 5171, 47917, 12973, ...}. (End)
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LINKS
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Seiichi Manyama, Table of n, a(n) for n = 1..100
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CROSSREFS
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Cf. A015961.
Sequence in context: A045595 A228440 A015958 * A223223 A240942 A216131
Adjacent sequences: A014948 A014949 A014950 * A014952 A014953 A014954
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KEYWORD
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nonn
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AUTHOR
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Olivier Gérard
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EXTENSIONS
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a(11)-a(30) from Alexander Adamchuk, May 16 2010
Edited by Max Alekseyev, May 20 2011
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STATUS
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approved
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