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 | 130 |
| 2 | 4580 |
| 3 | 84132 |
| 4 | 1334973 |
| 5 | 21348990 |
| 6 | 356222482 |
| 7 | 6172817040 |
| 8 | 109166159263 |
| 9 | 1947747629183 |
| 10 | 34864494529806 |
| 11 | 624634228911233 |
| 12 | 11192898789327524 |
| 13 | 200562963738597382 |
| 14 | 3593689853465024489 |
| 15 | 64389966977277732381 |