# A049976 (b-file synthesized from sequence entry)
1 1
2 3
3 4
4 9
5 21
6 39
7 81
8 179
9 418
10 756
11 1515
12 3047
13 6154
14 12645
15 26387
16 57413
17 135059
18 243732
19 487467
20 974951
21 1949962
22 3900261
23 7801619
24 15607877
25 31235987
26 62580646
27 125513700
28 252489895
29 510831447
30 1045097262
31 2184472237