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 | 3 |
| 2 | 5 |
| 3 | 29 |
| 4 | 727 |
| 5 | 3628811 |
| 6 | 6599 |
| 7 | 6385271 |
| 8 | 1291883 |
| 9 | 315389197 |
| 10 | 123662437024088191 |
| 11 | 2107707330310062524424576119 |
| 12 | 50717732086848522419 |
| 13 | 14602944428087660261 |
| 14 | 55353784249983832172137 |
| 15 | 16166897314580017 |