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 | 17 |
| 2 | 54 |
| 3 | 368 |
| 4 | 2530 |
| 5 | 178478 |
| 6 | 1596520 |
| 7 | 129145076 |
| 8 | 1162268326 |
| 9 | 94143190994 |
| 10 | 68630377389272 |
| 11 | 617673396313738 |
| 12 | 450283905891048016 |
| 13 | 36472996377170855324 |
| 14 | 328256967394537157134 |
| 15 | 26588814358957503391610 |