# A018185 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 7
4 13
5 24
6 46
7 86
8 162
9 306
10 576
11 1088
12 2054
13 3878
14 7322
15 13824
16 26103
17 49286
18 93060
19 175713
20 331776
21 626452
22 1182850
23 2233427
24 4217101
25 7962624
26 15034828
27 28388387
28 53602242
29 101210415
30 191102976