n | a(n) |
---|---|
1 | 81 |
2 | 277 |
3 | 1033 |
4 | 4183 |
5 | 17481 |
6 | 75907 |
7 | 330433 |
8 | 1468723 |
9 | 6479721 |
10 | 29026267 |
11 | 128645233 |
12 | 577868563 |
13 | 2565424761 |
14 | 11535912427 |
15 | 51246733633 |
16 | 230538193603 |
17 | 1024408886601 |
18 | 4609215271387 |
19 | 20483612959633 |
20 | 92170773169843 |
21 | 409632127625241 |
[81,277,1033,4183,17481,75907,330433,1468723, 6479721,29026267,128645233,577868563,2565424761, 11535912427,51246733633,230538193603, 1024408886601,4609215271387,20483612959633, 92170773169843,409632127625241] |