# A321741 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 2 6 2 7 2 8 6 9 18 10 18 11 18 12 72 13 432 14 1728 15 1728 16 1728 17 8640 18 86400 19 864000 20 4320000 21 4320000 22 4320000 23 25920000 24 388800000 25 7776000000 26 116640000000 27 699840000000 28 699840000000 29 699840000000 30 4898880000000 31 102876480000000 32 3600676800000000 33 126023688000000000 34 2646497448000000000 35 18525482136000000000 36 18525482136000000000