# A129949 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 20
5 110
6 700
7 5005
8 40264
9 362796
10 3628680
11 39916635
12 479001380
13 6227020514
14 87178290836
15 1307674367545
16 20922789887440
17 355687428095320
18 6402373705727184
19 121645100408831031
20 2432902008176638860
21 51090942171709438670
22 1124000727777607678460