# A007084 (b-file synthesized from sequence entry)
2 0
3 0
4 0
5 0
6 1
7 1
8 1
9 4
10 5
11 14
12 28
13 86
14 211
15 648
16 1878
17 5931
18 18326
19 58746
20 187620
21 608065
22 1975191
23 6461809
24 21212414