# A309159 (b-file synthesized from sequence entry)
0 1
1 2
2 2
3 4
4 10
5 28
6 79
7 235
8 720
9 2254
10 7146
11 22927
12 74137
13 241461
14 790838
15 2603210
16 8604861
17 28549166
18 95027832
19 317229779
20 1061764660
21 3562113987
22 11976146355