A010072 a(n+1) = a(n) + sum of digits in base 9 representation of a(n).

1, 2, 4, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 96, 104, 112, 120, 128, 136, 144, 152, 168, 176, 184, 192, 200, 208, 216, 224, 240, 256, 264, 272, 280, 288, 296, 312, 328, 336, 344, 352, 360, 368, 384, 400, 416, 424, 432, 440, 456, 472, 488, 496

Offset

0,2

Links

Table of n, a(n) for n=0..52.

Index entries for Colombian or self numbers and related sequences

Mathematica

NestList[#+Total[IntegerDigits[#, 9]]&, 1, 60] (* Harvey P. Dale, Apr 18 2011 *)

Crossrefs

Sequence in context: A261890 A072874 A160158 * A318654 A333994 A305656

Adjacent sequences: A010069 A010070 A010071 * A010073 A010074 A010075

Keyword

nonn,base

Author

Leonid Broukhis

Extensions

More terms from Neven Juric, Apr 11 2008

Status

approved