# A063039 (b-file synthesized from sequence entry)
1 1
2 1
3 6
4 66
5 4200
6 4192200
7 5115600
8 19083776176080
9 10086416728304192640
10 126556188275836361347200
11 451535899566923284351392000
12 1253032399528279799996000622278320876800