# A344500 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 7 4 21 5 66 6 216 7 715 8 2395 9 8101 10 27598 11 94568 12 325612 13 1125632 14 3904512 15 13583195 16 47373255 17 165585883 18 579907758 19 2034443127 20 7148313381 21 25151582046 22 88607951512 23 312518438532 24 1103393962996 25 3899415207676 26 13792683831176 27 48825746365672 28 172971084083752