# A138458 (b-file synthesized from sequence entry)
1 2
2 27
3 625
4 4802
5 73205
6 199927
7 1002252
8 1954815
9 6156502
10 24754835
11 36940840
12 106827177
13 197803270
14 263247677
15 448930652
16 923186277
17 1757017345
18 2146105355
19 3768259627
20 5336453010
21 6304409502
22 10127021060
23 13620538127