A066005 Sum of digits of 11^n.

1, 2, 4, 8, 16, 14, 28, 38, 40, 53, 43, 41, 55, 47, 76, 71, 88, 86, 82, 83, 94, 71, 97, 95, 118, 101, 112, 125, 124, 140, 145, 137, 139, 143, 178, 140, 172, 200, 184, 188, 205, 203, 190, 164, 175, 215, 196, 248, 190, 218, 265, 251, 223, 230

Offset: 0

Author

N. J. A. Sloane, Dec 11 2001

Keywords

• nonn
• base

Links

• Harry J. Smith, Table of n, a(n) for n = 0..1000

Crossrefs

Cf. sum of digits of k^n: A001370 (k=2), A004166 (k=3), A065713 (k=4), A066001 (k=5), A066002 (k=6), A066003 (k=7), A066004 (k=8), A065999 (k=9), this sequence (k=11), A066006 (k=12), A175527 (k=13).

Programs

Mathematica

Total/@(IntegerDigits/@(11^Range[0,60])) (* Harvey P. Dale, Nov 02 2011 *)

PARI

a(n) = sumdigits(11^n); \\ Michel Marcus, Nov 01 2013

Formula

a(n) = A007953(A001020(n)). - Michel Marcus, Nov 01 2013