# A151180 (b-file synthesized from sequence entry) 0 1 1 3 2 12 3 50 4 227 5 1047 6 4939 7 23571 8 113575 9 550785 10 2685286 11 13143538 12 64538881 13 317716079 14 1567357416 15 7745417246 16 38330815841 17 189923526167 18 942013070950 19 4676466466360 20 23233166431451 21 115500619414161 22 574524637022633 23 2859238829041077 24 14235846954865105 25 70906304719276783 26 353293684393014734