# A061558 (b-file synthesized from sequence entry)
1 0
2 1
3 2
4 6
5 6
6 30
7 150
8 1210230
9 32671170
10 224494620
11 1536160080
12 1482708889200
13 9918821194590
14 266029822978920
15 266029822978920
16 11358256064006271420
17 341976204789992332560
18 128642760444772214170530
19 2166703103992332274919550