# A097120 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 4
5 13
6 31
7 61
8 115
9 232
10 505
11 1117
12 2413
13 5089
14 10660
15 22477
16 47779
17 101833
18 216619
19 459568
20 974017
21 2065465
22 4383769
23 9307633
24 19759108
25 41934589
26 88985383
27 188834389
28 400758931
29 850562776
30 1805202073
31 3831179989