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A175456 (Digit sum of 5^n) mod n. 4
0, 1, 2, 1, 1, 1, 2, 1, 8, 0, 5, 4, 10, 6, 14, 10, 5, 10, 2, 1, 20, 1, 5, 10, 2, 1, 8, 1, 25, 1, 11, 10, 23, 1, 22, 1, 30, 10, 17, 10, 14, 19, 20, 19, 26, 20, 34, 1, 11, 1, 50, 26, 13, 19, 2, 28, 44, 37, 14, 19, 11, 1, 44, 38, 34, 49, 51, 60, 59, 53, 58, 1, 2, 19, 44, 19, 14, 70, 63, 10, 71, 1, 41, 28, 2, 10, 17, 10, 5, 46, 38, 10, 17, 37, 32, 37, 2, 72, 71, 83 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..100.

MATHEMATICA

Table[Mod[Total[IntegerDigits[5^n]], n], {n, 100}] (* Harvey P. Dale, Jan 05 2012 *)

CROSSREFS

Cf. A000351, A066001.

Sequence in context: A323409 A080388 A104308 * A122377 A293900 A284463

Adjacent sequences:  A175453 A175454 A175455 * A175457 A175458 A175459

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Dec 03 2010

STATUS

approved

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Last modified October 23 22:21 EDT 2019. Contains 328373 sequences. (Running on oeis4.)