# A058585 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 9
5 23
6 63
7 177
8 514
9 1526
10 4624
11 14230
12 44357
13 139779
14 444557
15 1425151
16 4600338
17 14939849
18 48778197
19 160019884
20 527200711
21 1743607825
22 5786756469
23 19266336882
24 64331275266
25 215377539119
26 722840378041
27 2431459847363