# A364506 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 1 4 6 5 6 6 1 7 40 8 90 9 20 10 1 11 350 12 5880 13 1680 14 70 15 1 16 3528 17 594594 18 1101100 19 34650 20 252 21 1 22 38808 23 75088728 24 1299170600 25 229265400 26 756756 27 924 28 1 29 453024 30 10861066216 31 2066315135040 32 3164045050530 33 50678855040 34 17153136 35 3432 36 1 37 5521230 38 1721929279200 39 3943172216808000