# A174566 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 7
4 13
5 23
6 43
7 80
8 156
9 308
10 628
11 1300
12 2754
13 5908
14 12867
15 28306
16 62914
17 140902
18 317887
19 721397
20 1646080
21 3773415
22 8686867
23 20072822
24 46541053
25 108241285
26 252447554
27 590284775
28 1383498325
29 3249679480
30 7648547152