# A369626 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 21
5 75
6 265
7 925
8 3201
9 11017
10 37793
11 129393
12 442497
13 1512225
14 5165953
15 17643457
16 60250113
17 205729921
18 702452225
19 2398414593
20 8188884993