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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 2355 |
| 10 | 17497263 |
| 11 | 1860801514823609 |
| 12 | 3584505381349378370871887741627 |
| 13 | 85751894581999497691951513557530024967086681471033652102477414 |