# A018791 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 0
5 0
6 1
7 3
8 8
9 20
10 48
11 136
12 344
13 788
14 1775
15 3947
16 9373
17 21533
18 48327
19 104676
20 224997
21 496490
22 1082575
23 2334984
24 4997364
25 10532236
26 22568064
27 48062489
28 101796210
29 214545469
30 450146443
31 946329292
32 1980769346