# A174636 (b-file synthesized from sequence entry)
0 1
1 9
2 1046
3 519918
4 681617304
5 1853340127320
6 9049964145536880
7 72083636411763075120
8 874164613833481641471360
9 15325066482283901592487889280
10 372998446683217113984893861356800