# A000080 (b-file synthesized from sequence entry)
3 1
4 1
5 2
6 4
7 9
8 19
9 48
10 117
11 307
12 821
13 2277
14 6437
15 18634
16 54775
17 163703
18 495529
19 1518706
20 4703848
21 14714754
22 46444979
23 147832051
24 474229588
25 1532565644