# A249277 (b-file synthesized from sequence entry) 0 1 1 2 2 24 3 48 4 5760 5 1280 6 580608 7 1161216 8 1393459200 9 398131200 10 367873228800 11 363331584 12 24103053950976000 13 4382373445632000 14 115694658964684800 15 88995891511296000 16 726206474732175360000 17 6455168664286003200