# A148426 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 18
5 61
6 225
7 825
8 3205
9 12791
10 52429
11 217143
12 911057
13 3867757
14 16646382
15 72368671
16 317076266
17 1398003840
18 6204279946
19 27714426625
20 124522666545
21 562150971473
22 2548318697521
23 11598080400448
24 52994780032247
25 243032840624120
26 1118117316012481
27 5158855695201946
28 23867302101397595