# A056419 (b-file synthesized from sequence entry) 1 0 2 0 3 0 4 0 5 0 6 60 7 360 8 6030 9 35280 10 410976 11 1174896 12 19948200 13 43022700 14 543757860 15 2524673904 16 15399118440 17 46338868800 18 737917466160 19 1459120076400 20 19381180990752 21 75959665269840 22 534453892557660