# A149350 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 42
5 156
6 593
7 2281
8 9007
9 35980
10 144820
11 588319
12 2409154
13 9915930
14 41011199
15 170436891
16 711045649
17 2975942110
18 12494155666
19 52604269433
20 222018315817
21 939132096649
22 3980901402084
23 16906905614935
24 71928191115056
25 306508303374156
26 1308116731888692
27 5590618748977314