# A173139 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 11
5 31
6 97
7 309
8 1026
9 3466
10 11964
11 41856
12 148373
13 531233
14 1919313
15 6986745
16 25604367
17 94379887
18 349702606
19 1301729084
20 4865680876
21 18255350676
22 68724316775
23 259521249065
24 982796892300
25 3731493081316
26 14201727734640