# A063651 (b-file synthesized from sequence entry) 0 1 1 1 2 21 3 85 4 747 5 4375 6 31387 7 202841 8 1382259 9 9167119 10 61643709 11 411595537 12 2758179839 13 18448963469 14 123518353059 15 826573277157 16 5532716266089 17 37028886137273 18 247839719105625 19 1658772577825883 20 11102227136885119