A015891 - OEIS

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A015891

Numbers n such that n | 5^n + 5.

1, 2, 5, 6, 10, 30, 70, 1565, 2806, 3126, 51670, 58290, 214405, 285286, 378258, 1854766, 2170486, 2222122, 2247610, 3463230, 4147522, 5942526, 9381126, 14818486, 15743890, 20162858, 34087054, 34838686, 38742166, 71067430 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	MATHEMATICA	`Select[Range[1000000], IntegerQ[(PowerMod[5, #, # ]+5)/# ]&] (Adamchuk)`
	CROSSREFS	`Cf. A067946 = numbers n such that n divides 5^n-1. Cf. A015951 = numbers n such that n \| 5^n + 1.` `Sequence in context: A056643 A057256 A073825 * A160645 A026344 A057812` `Adjacent sequences: A015888 A015889 A015890 * A015892 A015893 A015894`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com)`
	EXTENSIONS	`Corrected by Alexander Adamchuk (alex(AT)kolmogorov.com), Nov 04 2006`

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Last modified February 16 14:37 EST 2012. Contains 205930 sequences.