# A149725 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 75
5 287
6 1291
7 5511
8 25329
9 111793
10 518297
11 2346033
12 11019069
13 50774817
14 239978385
15 1117987233
16 5317529355
17 25013236863
18 119552222347
19 566185604841
20 2716303579489
21 12937427296805
22 62281272464045
23 298008646708747
24 1438527895424095
25 6909251094604987
26 33432874382265263
27 161099198710910065