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) |
|---|---|
| 3 | 0 |
| 4 | 299 |
| 5 | 5643 |
| 6 | 1357259 |
| 7 | 273624711 |
| 8 | 17832200896811 |
| 9 | 26748301350411 |
| 10 | 44580503598539 |
| 11 | 62412976762503 |
| 12 | 106993205379371 |
| 13 | 106993205384715 |
| 14 | 106993206736331 |
| 15 | 106993479003783 |