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A033906 Sort then Add!. 0
20, 22, 44, 88, 176, 343, 677, 1354, 2699, 5398, 8987, 16876, 33554, 67009, 67688, 134476, 268943, 503632, 526988, 783877, 1161665, 2277331, 3500708, 3504286, 3738854, 7084642, 7329320, 7552699, 10109498, 10224397, 11447876, 22894654 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..32.

FORMULA

a(n)=A033905(n-1), n>2. [From R. J. Mathar, Oct 22 2008]

MATHEMATICA

NestList[#+FromDigits[Sort[IntegerDigits[#]]]&, 20, 40] (* Harvey P. Dale, Oct 28 2017 *)

CROSSREFS

Cf. A033860.

Sequence in context: A133260 A163630 A259735 * A322323 A139357 A104059

Adjacent sequences:  A033903 A033904 A033905 * A033907 A033908 A033909

KEYWORD

nonn,base,easy

AUTHOR

N. J. A. Sloane, David W. Wilson

STATUS

approved

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Last modified April 20 02:06 EDT 2019. Contains 322291 sequences. (Running on oeis4.)