# A089156 (b-file synthesized from sequence entry)
0 0
1 16
2 576
3 25600
4 1254400
5 65028096
6 3497066496
7 192980975616
8 10855179878400
9 619683355033600
10 35792910586740736
11 2087229562810269696
12 122682715414070296576
13 7259332273021911040000
14 432004345063916175360000
15 25835779854133582469529600