# A026720 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 5
4 13
5 25
6 63
7 128
8 319
9 664
10 1647
11 3468
12 8583
13 18179
14 44941
15 95486
16 235913
17 502130
18 1240173
19 2642373
20 6524919
21 13910933
22 34346785
23 73254357
24 180855499
25 385819274
26 952494047
27 2032271705
28 5017037457
29 10705592360