# A012166 (b-file synthesized from sequence entry) 0 1 1 3 2 49 3 1915 4 143905 5 17011475 6 2994791825 7 719040113675 8 229441987074625 9 92824148885459875 10 46824601078366320625 11 28633111489683067566875 12 20964654070778933185750625 13 18047023186844734022903421875