# A203311 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 48
5 30240
6 1596672000
7 18172937502720000
8 122457316443772566896640000
9 1284319496829094129116119090331648000000
10 55603466527142141932748234118927499493985767915520000000
11 26110840958525805673462196263372614726154694067746586937781385166848000000000