# A081890 (b-file synthesized from sequence entry)
0 1
1 3
2 7
3 33
4 643
5 11073
6 151867
7 1816713
8 19996963
9 208630833
10 2099398027
11 20597485593
12 198424412083
13 1885822419393
14 17740469253787
15 165580566245673
16 1535948935336003
17 14178113530908753
18 130361707324735147