# A016297 (b-file synthesized from sequence entry)
0 1
1 15
2 159
3 1475
4 12831
5 107835
6 888679
7 7239555
8 58567311
9 471793355
10 3790622199
11 30406356435
12 243657749791
13 1951296498075
14 15620544499719
15 125015218606115
16 1000376061956271
17 8004280061317995
18 64040598319145239