# A018106 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 10
4 21
5 45
6 96
7 206
8 441
9 944
10 2021
11 4326
12 9261
13 19825
14 42439
15 90849
16 194481
17 416325
18 891224
19 1907839
20 4084101
21 8742815
22 18715702
23 40064612
24 85766121
25 183599119
26 393029742
27 841356859
28 1801088541