# A056627 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 1 6 12 7 12 8 12 9 36 10 720 11 720 12 480 13 480 14 1680 15 3024 16 12096 17 12096 18 145152 19 145152 20 7257600 21 345600 22 1900800 23 1900800 24 136857600 25 684288000 26 4447872000 27 4447872000 28 435891456000 29 435891456000 30 3138418483200 31 3138418483200 32 6276836966400 33 190207180800