# A294841 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 13 4 34 5 87 6 212 7 504 8 1167 9 2665 10 5933 11 13042 12 28191 13 60148 14 126688 15 263821 16 543414 17 1108272 18 2239182 19 4484482 20 8907530 21 17555485 22 34345465 23 66724969 24 128772908 25 246951514 26 470738283 27 892159198 28 1681544803 29 3152656375 30 5880839454 31 10916463171 32 20169007200 33 37095527149