# A029577 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 362880 11 3991680 12 47900160 13 622702080 14 8717829120 15 130767436800 16 2092278988800 17 35568742809600 18 640237370572800 19 12164510040883200 20 231125690776780800