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 | 89 |
| 2 | 1097 |
| 3 | 28959 |
| 4 | 498825 |
| 5 | 10288475 |
| 6 | 190243099 |
| 7 | 3674032121 |
| 8 | 68795107993 |
| 9 | 1301324910599 |
| 10 | 24374459510955 |
| 11 | 457521652409443 |
| 12 | 8556633331945529 |
| 13 | 160077250226203655 |
| 14 | 2989991870865523923 |
| 15 | 55846494235069318769 |