# A172012 (b-file synthesized from sequence entry)
0 2
1 3
2 15
3 54
4 207
5 783
6 2970
7 11259
8 42687
9 161838
10 613575
11 2326239
12 8819442
13 33437043
14 126769455
15 480619494
16 1822166847
17 6908359023
18 26191577610
19 99299809899
20 376474162527
21 1427321917278
22 5411388239415
23 20516130470079
24 77782556128482
25 294896059795683