# A075756 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 52
4 588
5 8174
6 134537
7 2554647
8 54909468
9 1316675221
10 34820961457
11 1006230148609
12 31529224324159
13 1064355502971193
14 38497326001639439
15 1484865225798412485
16 60822449267067095601
17 2636248249383130776940
18 120520100503562054999860
19 5794815395039941996204424