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 | 2 |
| 2 | 1334 |
| 3 | 1969 |
| 4 | 28669 |
| 5 | 86006 |
| 6 | 126961 |
| 7 | 338603654 |
| 8 | 536801281 |
| 9 | 366479720500691270 |
| 10 | 375344017599431990 |
| 11 | 500461553802019261 |
| 12 | 554079264075351985 |