# A002013 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 3
5 7
6 13
7 31
8 65
9 154
10 347
11 824
12 1905
13 4512
14 10546
15 24935
16 58476
17 138002
18 323894
19 763172
20 1790585
21 4213061
22 9878541
23 23214728
24 54393063
25 127687369
26 298969219
27 701171557
28 1640683309
29 3844724417
30 8991137036
31 21054243655
32 49211076053