# A149985 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 17
4 55
5 200
6 737
7 2810
8 10993
9 43563
10 176307
11 717457
12 2968511
13 12319177
14 51739914
15 218083622
16 926385446
17 3953155545
18 16951252816
19 73047645626
20 315747238313
21 1371343273755
22 5968518947214
23 26086649250226
24 114220422192153
25 501836040308036
26 2208889047373640
27 9748272309261590