# A030838 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 27
5 137
6 825
7 5776
8 46210
9 415896
10 4158962
11 45748587
12 548983054
13 7136779702
14 99914915833
15 1498723737508
16 23979579800136
17 407652856602324
18 7337751418841832
19 139417276957994821
20 2788345539159896420