# A026696 (b-file synthesized from sequence entry)
1 1
2 3
3 15
4 54
5 281
6 1069
7 5682
8 22196
9 119437
10 473871
11 2570259
12 10302254
13 56189736
14 226854572
15 1242353004
16 5042768384
17 27702888589
18 112915371783
19 621846132945
20 2543004195610
21 14032879286593
22 57541490484761
23 318053061106482