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A036227 a(1) = 20; a(n+1) = a(n) + sum of decimal digits of a(n). 1
20, 22, 26, 34, 41, 46, 56, 67, 80, 88, 104, 109, 119, 130, 134, 142, 149, 163, 173, 184, 197, 214, 221, 226, 236, 247, 260, 268, 284, 298, 317, 328, 341, 349, 365, 379, 398, 418, 431, 439, 455, 469, 488, 508, 521, 529, 545, 559, 578, 598, 620, 628, 644, 658 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

elements >= 109 can be found in A007618.

LINKS

Table of n, a(n) for n=1..54.

Index entries for Colombian or self numbers and related sequences

MATHEMATICA

NestList[#+Total[IntegerDigits[#]]&, 20, 60] (* Harvey P. Dale, May 11 2014 *)

CROSSREFS

Cf. A004207, A016052, A007618, A006507, A016052.

Sequence in context: A094203 A095439 A359076 * A328636 A171953 A133260

Adjacent sequences: A036224 A036225 A036226 * A036228 A036229 A036230

KEYWORD

easy,nonn,base

AUTHOR

Miklos SZABO (mike(AT)ludens.elte.hu)

EXTENSIONS

Edited by Charles R Greathouse IV, Aug 02 2010

STATUS

approved

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Last modified February 4 14:20 EST 2023. Contains 360055 sequences. (Running on oeis4.)