# A107050 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 27
4 864
5 2700000
6 291600000
7 240145138800000
8 1967268977049600000
9 1045487392432216473600000
10 13068592405402705920000000000
11 3728621931719673008255139717120000000000