# A013294 (b-file synthesized from sequence entry)
0 1
1 6
2 105
3 3780
4 231525
5 21517650
6 2810132325
7 487540053000
8 107478429683625
9 28959878236038750
10 9172717463134850625
11 3251808972997572487500
12 1181538736415476892578125