This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 2701 |
| 3 | 5945 |
| 4 | 6966998461 |
| 5 | 6985213385 |
| 6 | 1690221150161 |
| 7 | 3694758675833 |
| 8 | 16147954264597 |
| 9 | 57837917671129 |
| 10 | 218262857131345 |
| 11 | 77961963224782817 |
| 12 | 90065948248084453 |
| 13 | 773408527734329789 |
| 14 | 695664827366678317 |
| 15 | 10488071615106960265 |