# A375717 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 8
5 20
6 40
7 70
8 9072
9 80808
10 470640
11 2217930
12 91956920
13 1649007932
14 18956858648
15 169921752910
16 4310715370080
17 111302746115920
18 2053356893604192
19 29525879498171538
20 660295352236840680
21 19735183465373056100
22 504257138580203577800