# A000637 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 2
4 7
5 8
6 37
7 40
8 200
9 258
10 1039
11 1501
12 7629
13 10109
14 54322
15 83975
16 527036
17 780193
18 5808293