# A097335 (b-file synthesized from sequence entry)
0 1
1 4
2 4
3 13
4 49
5 85
6 202
7 643
8 1408
9 3226
10 9013
11 21685
12 50719
13 131836
14 327001
15 783472
16 1969996
17 4913005
18 11964253
19 29694217
20 73911262
21 181589539
22 448837492
23 1114038850
24 2748344701
25 6787882129
26 16814231779
27 41549334088
28 102640273249