# A023428 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 1
5 1
6 2
7 4
8 7
9 11
10 17
11 27
12 45
13 77
14 132
15 224
16 378
17 640
18 1093
19 1881
20 3250
21 5622
22 9732
23 16874
24 29332
25 51126
26 89313
27 156283
28 273842
29 480474
30 844220
31 1485472
32 2617335
33 4617243
34 8154289
35 14415869
36 25511256
37 45190366
38 80124434
39 142189496