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 | 12 |
| 2 | 258 |
| 3 | 2717 |
| 4 | 36981 |
| 5 | 512354 |
| 6 | 6812856 |
| 7 | 91994155 |
| 8 | 1242370107 |
| 9 | 16741579726 |
| 10 | 225799768740 |
| 11 | 3045362800259 |
| 12 | 41068189990009 |
| 13 | 553851481354328 |
| 14 | 7469298996031612 |
| 15 | 100731170465697137 |
| 16 | 1358466913972452523 |