# A056702 (b-file synthesized from sequence entry) 1 0 2 2 3 3 4 9 5 15 6 18 7 36 8 63 9 114 10 225 11 405 12 482 13 1241 14 2018 15 9830 16 15795 17 22535 18 27752 19 41033 20 95574 21 131144 22 156221