# A272248 (b-file synthesized from sequence entry)
0 0
1 2
2 67584
3 7924375800
4 2876035930521600
5 2693451205324687500000
6 5648896640332217707816550400
7 23819277009290664033936067933468800
8 185754160490281505676324140907107450880000
9 2507604631016507710974687639612411760216253760000