# A013433 (b-file synthesized from sequence entry)
0 0
1 1
2 15
3 495
4 28735
5 2597175
6 337740975
7 59815330575
8 13857008709375
9 4071452200086375
10 1480690661198331375
11 653488912610356197375
12 344332933648569891309375
13 213657034023415650312084375