A175456 (Digit sum of 5^n) mod n.

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

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: A080388 A330742 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