# A149171 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 10
4 33
5 115
6 391
7 1439
8 5405
9 20303
10 79050
11 311520
12 1230961
13 4964657
14 20189652
15 82314358
16 340130593
17 1413947795
18 5890309480
19 24773921096
20 104674234969
21 443030309859
22 1888676636461
23 8080601115239
24 34621402879031
25 149177215251621
26 644645021479230
27 2789004825787100
28 12121746816861675