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 | 0 |
| 2 | 1 |
| 3 | 10 |
| 4 | 756 |
| 5 | 757 |
| 6 | 3160 |
| 7 | 3186 |
| 8 | 3187 |
| 9 | 3250 |
| 10 | 7560 |
| 11 | 7561 |
| 12 | 7651 |
| 13 | 20007 |
| 14 | 59548377 |
| 15 | 59548401 |
| 16 | 45773612811 |
| 17 | 45775397187 |
| 18 | 237617431723407 |
| 19 | 24991943420078301 |
| 20 | 24991943420078302 |
| 21 | 24991943420078307 |
| 22 | 24991943715007536 |
| 23 | 24991943715007537 |