# A242997 (b-file synthesized from sequence entry)
1 1
2 4
3 288
4 1105920
5 445906944000
6 30851909057249280000
7 540013176648715369394995200000
8 3299903381977999900396941913809223680000000
9 9276369213749813701818662527515163802639831924736000000000