# A069565 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 10
4 21
5 22
6 221
7 0
8 2432
9 9729
10 19459
11 136214
12 1770783
13 10624699
14 446237359
15 8478509822
16 195005725907
17 5655166051304
18 90482656820865
19 2171583763700761
20 86863350548030441
21 1216086907672426175