# A005801 (b-file synthesized from sequence entry)
0 0
1 30
2 217800
3 16294301520
4 6544151202877440
5 9764950519194817858560
6 42762698240957239228617722880
7 466476501707480855594001261422438400
8 11235366943887873286558941529247982529413120