# A112565 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 28 4 125 5 546 6 2527 7 11096 8 43633 9 186130 10 809831 11 3423432 12 14022373 13 58574894 14 250708291 15 1038612976 16 4353755777 17 18333324162 18 74663736859 19 311293807040 20 1286700247561 21 4917768055222 22 20458840039199 23 83985256000824