# A149724 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 75
5 285
6 1317
7 5567
8 25985
9 114405
10 542049
11 2456039
12 11720847
13 54060867
14 259872549
15 1214918367
16 5866220625
17 27689646713
18 134259837463
19 638654468767
20 3105757823623
21 14861570751109
22 72466412558809
23 348482332573211
24 1702720911060097
25 8220802950971551
26 40243093261609041
27 194955190455663275