# A047131 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 6
4 10
5 20
6 35
7 70
8 140
9 252
10 504
11 932
12 1864
13 3493
14 6986
15 13972
16 26265
17 52530
18 100168
19 200336
20 384573
21 769146
22 1538292
23 2950530
24 5901060
25 11422700
26 22845400
27 44403564
28 88807128
29 177614256
30 344644881
31 689289762
32 1346117062