# A149191 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 10 4 38 5 122 6 488 7 1710 8 7087 9 26321 10 111541 11 429981 12 1852992 13 7337801 14 32021180 15 129408800 16 570358802 17 2341953471 18 10405274367 19 43277165242 20 193563780133 21 813625097670 22 3659544514239 23 15519836602737 24 70141510450253 25 299727234321282 26 1360257096588248 27 5850780618278814