The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 28 |
| 3 | 496 |
| 4 | 8128 |
| 5 | 30240 |
| 6 | 32760 |
| 7 | 2178540 |
| 8 | 23569920 |
| 9 | 33550336 |
| 10 | 45532800 |
| 11 | 142990848 |
| 12 | 1379454720 |
| 13 | 8589869056 |
| 14 | 43861478400 |
| 15 | 66433720320 |
| 16 | 137438691328 |
| 17 | 153003540480 |
| 18 | 403031236608 |
| 19 | 704575228896 |
| 20 | 181742883469056 |
| 21 | 6088728021160320 |
| 22 | 14942123276641920 |
| 23 | 20158185857531904 |
| 24 | 275502900594021408 |
| 25 | 622286506811515392 |
| 26 | 2305843008139952128 |
[6,28,496,8128,30240,32760,2178540,23569920, 33550336,45532800,142990848,1379454720,8589869056, 43861478400,66433720320,137438691328,153003540480, 403031236608,704575228896,181742883469056, 6088728021160320,14942123276641920, 20158185857531904,275502900594021408, 622286506811515392,2305843008139952128] |