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A047489
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Numbers that are congruent to {1, 2, 3, 5, 7} mod 8.
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2
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1, 2, 3, 5, 7, 9, 10, 11, 13, 15, 17, 18, 19, 21, 23, 25, 26, 27, 29, 31, 33, 34, 35, 37, 39, 41, 42, 43, 45, 47, 49, 50, 51, 53, 55, 57, 58, 59, 61, 63, 65, 66, 67, 69, 71, 73, 74, 75, 77, 79, 81, 82, 83, 85, 87, 89
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OFFSET
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1,2
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COMMENTS
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Numbers n such that A002817(n) is divisible by n. [Bruno Berselli, Dec 11 2013]
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LINKS
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Bruno Berselli, Table of n, a(n) for n = 1..1000
Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,1,-1).
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FORMULA
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G.f.: x*(x+1)*(x^4+x^3+x^2+1)/((x-1)^2*(x^4+x^3+x^2+x+1)). [Colin Barker, Jun 22 2012]
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CROSSREFS
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Cf. A002817.
Sequence in context: A325600 A195921 A175089 * A196499 A035061 A302403
Adjacent sequences: A047486 A047487 A047488 * A047490 A047491 A047492
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane
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STATUS
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approved
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