# A148688 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 22
5 69
6 232
7 812
8 2933
9 10868
10 41176
11 158896
12 622615
13 2473326
14 9941501
15 40377341
16 165508498
17 684061812
18 2848337029
19 11939734114
20 50355254586
21 213555500201
22 910306132464
23 3898496289411
24 16768128275099
25 72411805333357
26 313867404311122
27 1365162015516800
28 5956939958207184