# A149206 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 10 4 40 5 129 6 540 7 1897 8 8246 9 30665 10 135859 11 524585 12 2358632 13 9347568 14 42477772 15 171734447 16 786713158 17 3229974119 18 14891910671 19 61902473315 20 286878483816 21 1204680901628 22 5606781805948 23 23745404043392 24 110910037745343 25 473126392668984 26 2216586236663657 27 9514692779869440