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 | 3 |
| 2 | 5 |
| 3 | 11 |
| 4 | 21 |
| 5 | 23 |
| 6 | 59 |
| 7 | 75 |
| 8 | 83 |
| 9 | 209 |
| 10 | 351 |
| 11 | 423 |
| 12 | 3813 |
| 13 | 3983 |
| 14 | 20925 |
| 15 | 23787 |
| 16 | 38853 |
| 17 | 56043 |
| 18 | 68505 |
| 19 | 74435 |