# A149111 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 8
4 36
5 100
6 458
7 1462
8 6809
9 23521
10 111180
11 405288
12 1935161
13 7330542
14 35252989
15 137422833
16 664576216
17 2649175259
18 12867856516
19 52224563411
20 254550418677
21 1048465569279
22 5124668686800
23 21370196670463
24 104693461764880
25 441179953011886
26 2165508882775008
27 9208165544591383
28 45270898259206533