# A174988 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 5
4 16
5 31
6 110
7 203
8 736
9 1345
10 4898
11 8933
12 32560
13 59359
14 216398
15 394475
16 1438144
17 2621569
18 9557570
19 17422277
20 63517264
21 115784095
22 422119982
23 769472267
24 2805304480
25 5113721281
26 18643356002
27 33984519845
28 123899107696