# A053791 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 34
4 121
5 468
6 1742
7 6802
8 25841
9 101428
10 389820
11 1535138
12 5944054
13 23461802
14 91314038
15 361034640
16 1410482689
17 5583955632
18 21878361324
19 86703276854
20 340483274100
21 1350453786234
22 5312965594054
23 21087370402596
24 83087565741142
25 329971068701702