# A148812 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 26
5 86
6 309
7 1112
8 4300
9 16355
10 64610
11 258460
12 1049577
13 4289188
14 17767640
15 74236553
16 312798334
17 1323001687
18 5645624363
19 24239460347
20 104391408045
21 451959306066
22 1967440956925
23 8589297566724
24 37631972874233
25 165505946315394
26 730191658379518
27 3230280805363359
28 14327178302247607