# A148943 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 29
5 103
6 367
7 1337
8 5023
9 18933
10 72019
11 277595
12 1072317
13 4161419
14 16257277
15 63604357
16 249494725
17 982307399
18 3871371275
19 15281854703
20 60457884995
21 239348796175
22 948543450125
23 3764377613819
24 14946670066195
25 59387715592641
26 236183780014071
27 939637420512623
28 3740066423029775