# A274627 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 1
5 3
6 9
7 27
8 81
9 189
10 441
11 1029
12 2401
13 5145
14 11025
15 23625
16 50625
17 104625
18 216225
19 446865
20 923521
21 1876833
22 3814209
23 7751457
24 15752961
25 31755969
26 64016001
27 129048129
28 260144641
29 522337665
30 1048788225
31 2105834625
32 4228250625
33 8473082625
34 16979393025
35 34025371905
36 68184176641