# A012472 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 -3 4 4 5 -40 6 250 7 -1260 8 14012 9 -133992 10 1310660 11 -16809980 12 215083592 13 -2938291200 14 45330896832 15 -728363224680 16 12475447944528 17 -230003712851648 18 4451144492528080 19 -91010462837366448