# A176611 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 15 4 45 5 151 6 549 7 2083 8 8133 9 32487 10 132141 11 545299 12 2277021 13 9603111 14 40844629 15 174997363 16 754562037 17 3271847975 18 14257744125 19 62407576979 20 274256671949 21 1209604653095 22 5352444701861 23 23755193862131