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A033652 Trajectory of 13 under map x->x + (x-with-digits-reversed). 2
13, 44, 88, 176, 847, 1595, 7546, 14003, 44044, 88088, 176176, 847847, 1596595, 7553546, 14007103, 44177144, 88354288, 176599676, 853595347, 1597190705, 6668108656, 13236127322, 35608290553, 71117571206 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

To get the next term, reverse the present term and add it to itself.

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..1000

Index entries for sequences related to Reverse and Add!

FORMULA

a(n+1) = a(n) + {a(n) reversed}.

EXAMPLE

44 = 13 + 31.

MATHEMATICA

NestList[#+FromDigits[Reverse[IntegerDigits[#]]]&, 13, 30] (* Harvey P. Dale, Mar 04 2015 *)

CROSSREFS

Row n=13 of A243238.

Sequence in context: A224102 A123294 A015247 * A026914 A226514 A159742

Adjacent sequences:  A033649 A033650 A033651 * A033653 A033654 A033655

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 19 18:19 EDT 2021. Contains 348091 sequences. (Running on oeis4.)