# A003872 (b-file synthesized from sequence entry)
1 1
2 1
3 7
4 7
5 14
6 14
7 20
8 20
9 21
10 21
11 28
12 28
13 35
14 35
15 42
16 56
17 56
18 64
19 64
20 70
21 70
22 90