# A148787 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 24
5 82
6 283
7 960
8 3672
9 13259
10 50113
11 193764
12 742612
13 2912785
14 11522720
15 45500097
16 183104544
17 735219575
18 2970271252
19 12116306433
20 49363789064
21 202394438728
22 833999867026
23 3437139541794
24 14245025660887
25 59162095255963
26 246097660973561
27 1027969659568924
28 4298235454806538