# A281003 (b-file synthesized from sequence entry)
1 1
2 0
3 0
4 1
5 6
6 28
7 252
8 4726
9 150324
10 8308928
11 817860888
12 144938364368
13 46784208920560
14 27789645300385184
15 30630702203393521120
16 63070163901389334212336
17 243902725979609232729020320
18 1779250465648201682685291759744