# A149851 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 14
4 46
5 154
6 578
7 2056
8 7734
9 29832
10 113786
11 448286
12 1762158
13 6982215
14 28034055
15 112599212
16 456160196
17 1855679003
18 7575193160
19 31073949234
20 127882427241
21 528025970306
22 2186615978962
23 9081877366235
24 37801377197439
25 157763676455239
26 659823092941944
27 2764674164214323