# A030268 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 3 4 9 5 35 6 153 7 791 8 4597 9 29988 10 215804 11 1697291 12 14457059 13 132392971 14 1295346365 15 13468653637 16 148142236784 17 1716782858995 18 20889118889021