# A155610 (b-file synthesized from sequence entry)
0 1
1 3
2 17
3 99
4 545
5 2883
6 14897
7 75939
8 384065
9 1933443
10 9706577
11 48650979
12 243609185
13 1219108803
14 6098732657
15 30503229219
16 152544843905
17 762810312963
18 3814309845137
19 19072324066659
20 95363944856225
21 476826697849923