# A007030 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 0
11 1
12 2
13 30
14 239
15 2369
16 22039
17 205663
18 1879665
19 16999932
20 152227187
21 1353996482