# A032398 (b-file synthesized from sequence entry) 1 2 2 4 3 14 4 20 5 40 6 266 7 400 8 652 9 722 10 2026 11 2732 12 3880 13 15454 14 18508 15 21964 16 30344 17 34618 18 100984 19 341686 20 534310 21 534602