# A148429 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 18
5 64
6 256
7 1034
8 4356
9 18614
10 81247
11 359337
12 1610581
13 7291244
14 33307717
15 153290739
16 710110090
17 3307993147
18 15485937086
19 72808065800
20 343619902508
21 1627234919118
22 7729314581738
23 36814380964831
24 175778394545330
25 841173701044272
26 4033587655388449
27 19377913914053259
28 93253546261952825