# A149501 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 9
4 45
5 121
6 521
7 1757
8 7273
9 26229
10 110901
11 408221
12 1748925
13 6649037
14 28453805
15 111004789
16 477102029
17 1882048601
18 8147322225
19 32485684073
20 140960817957
21 568975900137
22 2472480371173
23 10059701451345
24 43854142070437
25 179454745229265
26 784064426522837
27 3229517668816813
28 14124649304990029