# A374862 (b-file synthesized from sequence entry)
0 0
1 1
2 18
3 256
4 5400
5 153664
6 4251528
7 146410000
8 5159780352
9 215051077696
10 10497600000000
11 516094438514944
12 28802430771288192
13 1806336000000000000
14 113638807576776480768
15 7916729578225695719424
16 558793544769287109375000
17 42995640737555012867053824