# A085421 (b-file synthesized from sequence entry)
0 2
1 1
2 4
3 10
4 27
5 73
6 198
7 538
8 1462
9 3974
10 10802
11 29363
12 79816
13 216962
14 589764
15 1603144
16 4357797
17 11845720
18 32200005
19 87528688
20 237927642
21 646754385
22 1758060692
23 4778904432
24 12990409077
25 35311592938
26 95986861417