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 | 9 |
| 3 | 15 |
| 4 | 155 |
| 5 | 217 |
| 6 | 281 |
| 7 | 287 |
| 8 | 491 |
| 9 | 563 |
| 10 | 581 |
| 11 | 983 |
| 12 | 2243 |
| 13 | 4375 |
| 14 | 8409 |
| 15 | 98669 |