Relative class number h- of cyclotomic field Q(zeta_m) where m is n-th term of A035113.
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 2, 1, 3, 2, 3
1 seqfan posts
Thu Feb 5 22:44:07 CET 2009 [seqfan] A061653 corrected!