# A149832 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 10 4 28 5 87 6 295 7 1025 8 3668 9 13505 10 50939 11 195811 12 765060 13 3032505 14 12164349 15 49338483 16 202003995 17 834137367 18 3470745959 19 14540711868 20 61299117863 21 259882257795 22 1107518408090 23 4742237074597 24 20394709933666 25 88065138323178 26 381695490302277 27 1660121541256698 28 7243858826868699