# A274303 (b-file synthesized from sequence entry) 0 8 1 24 2 7680 3 64 4 3715891200 5 194641920 6 1428329123020800 7 160 8 1678343852714360832000 9 637770664031457116160000 10 4714400748520531002654720000 11 2602349213183333113465405440000 12 27064431817106664380040216576000000