# A007499 (b-file synthesized from sequence entry)
1 2
2 3
3 4
4 12
5 20
6 55
7 127
8 371
9 1037
10 3249
11 10071
12 32913
13 108112
14 363618
15 1233938
16 4244102
17 14716095
18 51480027
19 181312939