Number of 'Reverse and Add' steps needed to reach a palindrome, or -1 if never reaches a palindrome.
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 0
1 seqfan posts
Thu Dec 2 18:16:11 CET 2010 [seqfan] Re: Trotter Math