# A018176 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 7
4 12
5 21
6 39
7 71
8 131
9 240
10 441
11 811
12 1491
13 2741
14 5038
15 9261
16 17026
17 31301
18 57543
19 105788
20 194481
21 357538
22 657302
23 1208395
24 2221533
25 4084101
26 7508278
27 13803341
28 25376286
29 46652177
30 85766121