# A014173 (b-file synthesized from sequence entry)
0 1
1 4
2 11
3 25
4 52
5 103
6 198
7 377
8 717
9 1366
10 2609
11 5016
12 9707
13 18882
14 36864
15 72151
16 141739
17 279335
18 551783
19 1091651
20 2161875
21 4284004
22 8501136
23 16890969
24 33591903
25 66847031
26 133075695
27 264984011