The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 61 |
| 4 | 959 |
| 5 | 20821 |
| 6 | 545279 |
| 7 | 17128201 |
| 8 | 620355263 |
| 9 | 25594230937 |
| 10 | 1181868481463 |
| 11 | 60478614651577 |
| 12 | 3395069184089687 |
| 13 | 207524762064350473 |
| 14 | 13718967902774331287 |
| 15 | 975392219493426602569 |
| 16 | 74215525935813198093815 |
[1,5,61,959,20821,545279,17128201,620355263, 25594230937,1181868481463,60478614651577, 3395069184089687,207524762064350473, 13718967902774331287,975392219493426602569, 74215525935813198093815] |