# A049972 (b-file synthesized from sequence entry)
1 1
2 3
3 3
4 8
5 18
6 34
7 70
8 155
9 362
10 655
11 1312
12 2639
13 5330
14 10952
15 22854
16 49726
17 116976
18 211099
19 422200
20 844415
21 1688882
22 3378056
23 6757062
24 13518142
25 27053808
26 54201738
27 108708700
28 218684082
29 442436344
30 905169434
31 1891993760