# A374884 (b-file synthesized from sequence entry) 0 1 1 4 2 75 3 3600 4 314721 5 42928704 6 8362250379 7 2196324000000 8 746766466070625 9 318799285706474496 10 166848786507705952491 11 105015062916733187395584 12 78238953853457166762890625 13 68086982534559349084416000000 14 68431651668664224198422729187051