# A085749 (b-file synthesized from sequence entry)
1 3
2 5
3 17
4 61
5 317
6 1951
7 13697
8 109597
9 986411
10 9864091
11 108505097
12 1302061337
13 16926797467
14 236975164793
15 3554627472059
16 56874039553189
17 966858672404659
18 17403456103284379
19 330665665962403997
20 6613313319248079991