# A149017 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 35
5 124
6 510
7 1996
8 8486
9 35018
10 152208
11 648852
12 2864100
13 12477480
14 55706440
15 246442952
16 1109909256
17 4966324677
18 22522279875
19 101658778771
20 463622222653
21 2107092862481
22 9654437859981
23 44122523527414
24 202959384558304
25 931821123572725
26 4300695608582175
27 19821228913467964