# A091777 (b-file synthesized from sequence entry) 1 1 2 24 3 15120 4 57657600 5 741354768000 6 23982224839372800 7 1635195634511530291200 8 208598907329474462760960000 9 45687336913897607308591411200000 10 16098703928453240136983769705676800000 11 8673124144989289711553231707961190973440000