# A148773 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 22
5 80
6 265
7 872
8 3320
9 12105
10 43408
11 171113
12 652773
13 2457700
14 9936359
15 39053173
16 151708678
17 624013118
18 2505730939
19 9953885478
20 41474123101
21 169199138629
22 683499828381
23 2876966524245
24 11882126225734
25 48629680746168
26 206372586046556
27 860786961396088
28 3560042541404446