# A149113 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 9 4 30 5 90 6 308 7 963 8 3438 9 11234 10 39658 11 135300 12 485182 13 1661050 14 6059294 15 21080183 16 76433836 17 270898590 18 989797908 19 3508506050 20 12938529420 21 46251009992 22 169911558432 23 613777776976 24 2265122877620 25 8178540706698 26 30359539614762 27 110190927578014 28 407970567068040 29 1490764659238644