A033661 Trajectory of 31 under map x->x + (x-with-digits-reversed).

31, 44, 88, 176, 847, 1595, 7546, 14003, 44044, 88088, 176176, 847847, 1596595, 7553546, 14007103, 44177144, 88354288, 176599676, 853595347, 1597190705, 6668108656, 13236127322, 35608290553, 71117571206

Offset

0,1

Links

Table of n, a(n) for n=0..23.

Index entries for sequences related to Reverse and Add!

Formula

a(n) = A033654(n-1) = A033652(n+1), n>1. [From R. J. Mathar, Oct 22 2008]

Mathematica

NestList[#+IntegerReverse[#]&, 31, 30] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Nov 23 2016 *)

Crossrefs

Sequence in context: A227622 A020348 A033905 * A219243 A046047 A014313

Adjacent sequences: A033658 A033659 A033660 * A033662 A033663 A033664

Keyword

nonn,base

Author

N. J. A. Sloane.

Status

approved