# A112565 (b-file synthesized from sequence entry)
0 1
1 2
2 7
3 28
4 125
5 546
6 2527
7 11096
8 43633
9 186130
10 809831
11 3423432
12 14022373
13 58574894
14 250708291
15 1038612976
16 4353755777
17 18333324162
18 74663736859
19 311293807040
20 1286700247561
21 4917768055222
22 20458840039199
23 83985256000824