# A148434 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 19
5 64
6 257
7 941
8 3968
9 15839
10 69664
11 290521
12 1300855
13 5596851
14 25518160
15 112525866
16 519180302
17 2328488717
18 10843870533
19 49326788502
20 231519411263
21 1064731724495
22 5027517994091
23 23328822545899
24 110730474917654
25 517671974178514
26 2467712838619944
27 11608392697739886
28 55540653135855440