# A005226 (b-file synthesized from sequence entry)
0 0
1 1
2 1
3 2
4 6
5 6
6 27
7 20
8 130
9 124
10 598
11 641
12 4850
13 4772
14 35625
15 46074
16 389839
17 487408
18 4617554