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 | 2 |
| 3 | 3 |
| 4 | 9 |
| 5 | 18 |
| 6 | 27 |
| 7 | 54 |
| 8 | 90 |
| 9 | 108 |
| 10 | 163 |
| 11 | 197 |
| 12 | 254 |
| 13 | 432 |
| 14 | 1292 |
| 15 | 2202 |
| 16 | 9648 |
| 17 | 10347 |
| 18 | 16596 |
| 19 | 17203 |
| 20 | 46188 |
| 21 | 46992 |
| 22 | 77121 |
| 23 | 130082 |
| 24 | 167410 |
| 25 | 216546 |
| 26 | 596277 |