n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 17 |
3 | 70 |
4 | 297 |
5 | 1342 |
6 | 6519 |
7 | 34006 |
8 | 189647 |
9 | 1125180 |
10 | 7070043 |
11 | 46861668 |
12 | 326509757 |
13 | 2384118432 |
14 | 18194367189 |
15 | 144769455298 |
16 | 1198423872693 |
17 | 10301330797778 |
18 | 91782832060611 |
19 | 846291315842738 |
20 | 8063691844581123 |
21 | 79290580233274024 |
22 | 803613726879441863 |
23 | 8385262925870388104 |
[1,4,17,70,297,1342,6519,34006,189647,1125180, 7070043,46861668,326509757,2384118432,18194367189, 144769455298,1198423872693,10301330797778, 91782832060611,846291315842738,8063691844581123, 79290580233274024,803613726879441863, 8385262925870388104] |