# A047090 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 6
4 12
5 21
6 42
7 84
8 155
9 310
10 620
11 1176
12 2352
13 4704
14 9071
15 18142
16 36284
17 70717
18 141434
19 282868
20 555268
21 1110536
22 2221072
23 4381656
24 8763312
25 17526624
26 34697879
27 69395758
28 138791516
29 275467455
30 550934910
31 1101869820
32 2191008499