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 | 1 |
| 2 | 7 |
| 3 | 57 |
| 4 | 586 |
| 5 | 7465 |
| 6 | 114381 |
| 7 | 2054353 |
| 8 | 42374116 |
| 9 | 987654321 |
| 10 | 25678050355 |
| 11 | 736867805641 |
| 12 | 23136292864686 |
| 13 | 789018236134297 |
| 14 | 29043982525261081 |
| 15 | 1147797409030816545 |
| 16 | 48471109094902544776 |
| 17 | 2178347851919531492065 |
| 18 | 103805969587115219182431 |