# A047046 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 14
4 42
5 146
6 513
7 1814
8 6457
9 23852
10 88822
11 331756
12 1241569
13 4704536
14 17919729
15 68426280
16 261659138
17 1005583928
18 3876858984
19 14975423376
20 57918225459
21 224542599510
22 872234912198
23 3393031324338
24 13212674724177