# A350645 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 36 4 170 5 824 6 4060 7 20232 8 101664 9 514140 10 2613468 11 13340496 12 68335644 13 351087128 14 1808405600 15 9335697424 16 48289295226 17 250213951992 18 1298517484804 19 6748250144600 20 35114221973600 21 182924946400680 22 953931045159000 23 4979398271047200 24 26014703727203100