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

Author

Robert G. Wilson v

Keywords

• nonn
• base

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

• Index entries for sequences related to Reverse and Add!

Crossrefs

A002113, A065217.