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) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 36 |
| 3 | 484 |
| 4 | 8676 |
| 5 | 194404 |
| 6 | 5227236 |
| 7 | 163978084 |
| 8 | 5878837476 |
| 9 | 237109864804 |
| 10 | 10625889182436 |
| 11 | 523809809059684 |
| 12 | 28168941794178276 |
| 13 | 1641079211868751204 |
| 14 | 102961115527874385636 |
| 15 | 6921180217049667005284 |
| 16 | 496267460209336700111076 |
| 17 | 37807710659221213027893604 |