# A357248 (b-file synthesized from sequence entry) 5 280 6 6240 7 75600 8 954240 9 12579840 10 175392000 11 2594592000 12 40721049600 13 677053977600 14 11901451161600 15 220690229760000 16 4307253350400000 17 88289523818496000 18 1896762491559936000 19 42625344258072576000 20 1000193047805952000000 21 24463730767033958400000 22 622724156293184225280000