# A037635 (b-file synthesized from sequence entry)
1 2
2 15
3 108
4 758
5 5307
6 37152
7 260066
8 1820463
9 12743244
10 89202710
11 624418971
12 4370932800
13 30596529602
14 214175707215
15 1499229950508
16 10494609653558
17 73462267574907
18 514235873024352
19 3599651111170466