# A148465 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 19
5 61
6 216
7 789
8 2960
9 11439
10 45114
11 180779
12 735676
13 3030120
14 12613335
15 53004791
16 224550436
17 958227715
18 4115750849
19 17780103175
20 77214818728
21 336921319180
22 1476478558914
23 6495954222412
24 28683344656932
25 127075652153227
26 564718190262450
27 2516734088100503
28 11245821481990912