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 | 5 |
| 2 | 7 |
| 3 | 11 |
| 4 | 23 |
| 5 | 701 |
| 6 | 3989 |
| 7 | 4397 |
| 8 | 5501 |
| 9 | 7309 |
| 10 | 9281 |
| 11 | 10331 |
| 12 | 11243 |
| 13 | 12907 |
| 14 | 16127 |
| 15 | 27917 |
| 16 | 39901 |
| 17 | 43051 |
| 18 | 44843 |
| 19 | 48397 |
| 20 | 66569 |
| 21 | 70657 |