# A012209 (b-file synthesized from sequence entry) 0 1 1 -2 2 32 3 -1392 4 118400 5 -16678144 6 3517084672 7 -1037502889984 8 407811782836224 9 -205957880207835136 10 129921324821854289920 11 -100089923129501690626048 12 92456928301505596639674368