# A055862 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 36
4 400
5 5400
6 86436
7 1605632
8 34012224
9 810000000
10 21435888100
11 624333422592
12 19851622826256
13 684376513673216
14 25430282226562500
15 1013309916158361600
16 43104723599206637824
17 1949779138161985486848