# A149258 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 11 4 39 5 141 6 531 7 2055 8 8184 9 33072 10 135841 11 564960 12 2375302 13 10076779 14 43089130 15 185560423 16 804020555 17 3502720054 18 15334927573 19 67435970381 20 297735390506 21 1319311878971 22 5865676338727 23 26158787600870 24 116986315652226 25 524545274062845 26 2357659835110416 27 10620661292397852