A015993 Twelve iterations of Reverse and Add are needed to reach a palindrome.

2069, 2159, 2249, 2339, 2429, 2519, 2609, 2699, 2789, 2879, 2969, 3068, 3158, 3248, 3338, 3428, 3518, 3608, 3698, 3788, 3878, 3968, 4067, 4157, 4247, 4337, 4427, 4517, 4607, 4697, 4787, 4877, 4967, 5066, 5156, 5246, 5336, 5426, 5516

Offset

1,1

Comments

The number of iterations starts at 1, so palindromes (cf. A002113) are not excluded. This sequence coincides with the corresponding sequence excluding palindromes (A065217) for the entries shown in the database. The first divergence occurs at 10901.

Links

Table of n, a(n) for n=1..39.

Index entries for sequences related to Reverse and Add!

Crossrefs

A002113, A065217.

Sequence in context: A204310 A168432 A256744 * A065217 A249288 A200829

Adjacent sequences: A015990 A015991 A015992 * A015994 A015995 A015996

Keyword

nonn,base

Author

Robert G. Wilson v

Status

approved