# A149908 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 15
4 45
5 148
6 502
7 1747
8 6317
9 23052
10 86168
11 326073
12 1247768
13 4839365
14 18891695
15 74501818
16 295679894
17 1181086264
18 4748015184
19 19173354653
20 77844912265
21 317299791462
22 1298651204383
23 5334866709154
24 21985427198380
25 90903355567615
26 376877960323436
27 1566838350507980
28 6530022541791072