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 | 24 |
| 3 | 39 |
| 4 | 78 |
| 5 | 312 |
| 6 | 2184 |
| 7 | 1092 |
| 8 | 240 |
| 9 | 273 |
| 10 | 26232 |
| 11 | 11553 |
| 12 | 9840 |
| 13 | 177144 |
| 14 | 14348904 |
| 15 | 21523359 |
| 16 | 10315734 |
| 17 | 48417720 |
| 18 | 16120104 |
| 19 | 15706236 |
| 20 | 5036466318 |
| 21 | 258149112 |
| 22 | 1162261464 |
| 23 | 141214768239 |
| 24 | 421900912158 |
| 25 | 8857200 |
| 26 | 2184 |
| 27 | 2271 |
| 28 | 28578504864 |
| 29 | 21938847432216 |
| 30 | 148698308091840 |