# A129661 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 8 4 112 5 10528 6 3916416 7 453977888 8 5984725643520 9 24757413551258752 10 36544913291284069002240 11 3209228105587401803500707840 12 206085396642453387914503205007360