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 | 33 |
| 3 | 298 |
| 4 | 2649 |
| 5 | 23711 |
| 6 | 215341 |
| 7 | 1982296 |
| 8 | 18447847 |
| 9 | 173197435 |
| 10 | 1637524156 |
| 11 | 15570196516 |
| 12 | 148735628858 |
| 13 | 1426303768587 |
| 14 | 13722207893214 |
| 15 | 132387231596281 |
| 16 | 1280309591127436 |