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 | 7 |
| 2 | 163 |
| 3 | 2265 |
| 4 | 31857 |
| 5 | 461681 |
| 6 | 6639893 |
| 7 | 95431043 |
| 8 | 1372612359 |
| 9 | 19740345667 |
| 10 | 283887907827 |
| 11 | 4082690596769 |
| 12 | 58714522782689 |
| 13 | 844392025770105 |
| 14 | 12143471562419701 |
| 15 | 174639147022394875 |
| 16 | 2511541333793121239 |