# A052739 (b-file synthesized from sequence entry) 0 0 1 0 2 2 3 24 4 288 5 4800 6 103680 7 2741760 8 85800960 9 3100446720 10 127037030400 11 5819550105600 12 294727768473600 13 16350861400473600 14 986127353590579200 15 64238655955009536000 16 4495021381191204864000 17 336249161369543245824000