The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 15 |
| 6 | 222 |
| 7 | 555 |
| 8 | 666 |
| 9 | 834 |
| 10 | 1122 |
| 11 | 2442 |
| 12 | 3162 |
| 13 | 4818 |
| 14 | 6162 |
| 15 | 6216 |
| 16 | 8274 |
| 17 | 8554 |
| 18 | 28842 |
| 19 | 49266 |
| 20 | 49434 |
| 21 | 61446 |
| 22 | 69762 |
| 23 | 83334 |
| 24 | 88638 |
| 25 | 88842 |
| 26 | 89838 |
| 27 | 641886 |
| 28 | 648186 |
| 29 | 795795 |
| 30 | 892164 |
[2,3,5,7,15,222,555,666,834,1122,2442,3162,4818, 6162,6216,8274,8554,28842,49266,49434,61446,69762, 83334,88638,88842,89838,641886,648186,795795, 892164] |