# A207971 (b-file synthesized from sequence entry)
0 1
1 5
2 15
3 140
4 8795
5 9808325
6 57315191130
7 2812698182891585
8 894119494320160426760
9 2048089587570930007354766745
10 32079229816919862900907520464756250
11 3500720882833094608324749707338857577696205
12 2633228648869966875007549667526201212159637714889015