# A046989 (b-file synthesized from sequence entry)
0 1
1 6
2 180
3 2835
4 37800
5 467775
6 3831077250
7 127702575
8 2605132530000
9 350813659321125
10 15313294652906250
11 147926426347074375
12 2423034863565078262500
13 144228265688397515625
14 3952575621190533915703125
15 84913182070036240111050234375
16 999843529136357459316262500000