# A151436 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 11
4 44
5 153
6 638
7 2443
8 10468
9 42306
10 184576
11 772024
12 3411966
13 14612580
14 65212028
15 284126776
16 1277710146
17 5639805613
18 25519441118
19 113792116639
20 517542778146
21 2326572672034
22 10627523024268
23 48093423017929
24 220503392480274
25 1003378635817366
26 4615271568477192
27 21099242329057240