# A148738 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 25
5 84
6 323
7 1263
8 5170
9 21691
10 93163
11 407255
12 1807711
13 8124917
14 36903800
15 169163090
16 781396520
17 3633981175
18 16999571547
19 79933706284
20 377570306382
21 1790673354481
22 8523043486189
23 40697695158038
24 194894404202650
25 935750984180599
26 4503450820637610
27 21720021050852564
28 104959537188008910