A015993 - OEIS

%I #9 Mar 30 2012 17:30:17

%S 2069,2159,2249,2339,2429,2519,2609,2699,2789,2879,2969,3068,3158,

%T 3248,3338,3428,3518,3608,3698,3788,3878,3968,4067,4157,4247,4337,

%U 4427,4517,4607,4697,4787,4877,4967,5066,5156,5246,5336,5426,5516

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

%C 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.

%H <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a>

%Y A002113, A065217.

%K nonn,base

%O 1,1

%A _Robert G. Wilson v_