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 | 11 |
| 2 | 37 |
| 3 | 222553 |
| 4 | 3981707 |
| 5 | 8141131 |
| 6 | 26706079 |
| 7 | 107244499 |
| 8 | 14956328279 |
| 9 | 15820183739 |
| 10 | 103577289271 |
| 11 | 168466166087 |
| 12 | 338351202499 |