A033674 Trajectory of 99 under map x->x + (x-with-digits-reversed).

99, 198, 1089, 10890, 20691, 40293, 79497, 158994, 658845, 1207701, 2284722, 4559544, 9019098, 17928207, 88211178, 175322466, 839546037, 1570191975, 7362102726, 13634115363, 49985258994, 99970517988

Offset

0,1

Links

Table of n, a(n) for n=0..21.

Index entries for sequences related to Reverse and Add!

Formula

a(n)=A033659(n+1). [From R. J. Mathar, Oct 22 2008]

Mathematica

NestList[IntegerReverse[#]+#&, 99, 30] (* The program uses the IntegerReverse function from Mathematica version 10 *) (* Harvey P. Dale, Dec 05 2015 *)

Crossrefs

Sequence in context: A235228 A157947 A097599 * A043526 A031500 A044431

Adjacent sequences: A033671 A033672 A033673 * A033675 A033676 A033677

Keyword

nonn,base

Author

N. J. A. Sloane.

Status

approved