A033905 Sort then Add, a(1)=31.

31, 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, 45340343

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Maple

A033905 := proc(n)
    option remember ;
    if n =1 then
        31;
    else
        A070196(procname(n-1)) ;
    end if;
end proc:
seq(A033905(n), n=1..100) ; # R. J. Mathar, Feb 03 2025

Mathematica

NestList[#+FromDigits[Sort[IntegerDigits[#]]]&, 31, 40] (* Harvey P. Dale, Jul 19 2017 *)

Crossrefs

Cf. A033860.

Sequence in context: A306787 A227622 A020348 * A033661 A219243 A046047

Adjacent sequences: A033902 A033903 A033904 * A033906 A033907 A033908

Keyword

nonn,base,easy

Author

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

Status

approved