# A005851 (b-file synthesized from sequence entry)
5 1
6 1
7 1
8 1
9 2
10 2
11 2
12 3
13 3
14 4
15 6
16 6
17 7
18 9
19 12
20 16
21 21
22 21
23 23
24 24
25 30
26 30