# A374068 (b-file synthesized from sequence entry)
0 1
1 0
2 4
3 24
4 529
5 16100
6 919037
7 75568846
8 9196890092
9 1491628025318
10 317579623173729
11 86997150829931700
12 29703399282858184713
13 12512837775355494800500
14 6397110844644502402189404
15 3875565057688532269985283868
16 2747710211567246171588232074225
17 2265312860218073375019946448731300