a(n) = least k such that the remainder when 12^k is divided by k is n.
11, 5, 15, 10, 7, 21, 25, 34, 549, 134, 120593747, 13, 20395, 26, 1713, 20, 203, 57
1 seqfan posts
Tue Aug 11 01:35:14 CEST 2009 [seqfan] Re: Dead b-files for A127816 and others