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A033656 Trajectory of 21 under map x->x + (x-with-digits-reversed). 0
21, 33, 66, 132, 363, 726, 1353, 4884, 9768, 18447, 92928, 175857, 934428, 1758867, 9447438, 17794887, 96644658, 182289327, 906271608, 1712444217, 8836886388, 17673772776, 85401510447, 159803020905 (list; graph; refs; listen; history; text; internal format)
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) = A033653(n-1), n>1. [From R. J. Mathar, Oct 22 2008]

CROSSREFS

Sequence in context: A128283 A280878 A033901 * A270074 A032792 A146902

Adjacent sequences:  A033653 A033654 A033655 * A033657 A033658 A033659

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 12 03:14 EDT 2021. Contains 342912 sequences. (Running on oeis4.)