# A010033 (b-file synthesized from sequence entry)
1 1
2 2
3 3
4 6
5 11
6 20
7 36
8 66
9 121
10 223
11 415
12 774
13 1452
14 2724
15 5133
16 9695
17 18358
18 34867
19 66320
20 126499
21 241563
22 462479
23 886150
24 1707353
25 3270338
26 6295073
27 12133953