# A150536 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 26 4 102 5 420 6 1762 7 7546 8 32776 9 143740 10 636509 11 2837470 12 12723564 13 57356783 14 259622346 15 1179671953 16 5378030204 17 24587733520 18 112709464907 19 517854785497 20 2384306458458 21 10998978703826 22 50826959867930 23 235249720011487 24 1090445475090001 25 5061348100981751 26 23522089805096353 27 109444564002516165