# A028535 (b-file synthesized from sequence entry)
0 1
1 0
2 270
3 2871
4 18171
5 89991
6 375741
7 1380456
8 4602852
9 14210922
10 41167332
11 112987953
12 296065548
13 745155153
14 1809970083
15 4259274975
16 9741874320
17 21715729830
18 47285705676
19 100777629492
20 210581716518
21 432065232288
22 871606268064
23 1730764182321
24 3386501211393