# A129327 (b-file synthesized from sequence entry)
0 0
1 1
2 6
3 36
4 228
5 1545
6 11196
7 86457
8 708504
9 6136830
10 55976430
11 535904259
12 5369146272
13 56145107577
14 611336534802
15 6916529431620
16 81152874393168
17 985767316792449
18 12376996566040980
19 160399065135692073