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 | 63 |
| 3 | 45991 |
| 4 | 2942695 |
| 5 | 45982595359 |
| 6 | 5109066151 |
| 7 | 601081707598999 |
| 8 | 38469080386820311 |
| 9 | 252396118308232060471 |
| 10 | 252395862211967012407 |
| 11 | 447134922152359540530757327 |
| 12 | 447134770212444455649757327 |
| 13 | 2158234586764514215343657417779543 |
| 14 | 308319185132349039219686748825649 |