# A012856 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 193 4 25 5 4933 6 4401359 7 36740677 8 3071547701 9 23133946330973 10 329484655084859 11 21691682982342361 12 13881630720619393 13 69213549869735245153 14 3593575793538669123431 15 10240663960560618779544197 16 9484738025292216993019060741 17 8496155203670918507329390777 18 4389630332959873242573538670607401