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 | 3 |
| 3 | 5 |
| 4 | 6 |
| 5 | 9 |
| 6 | 13 |
| 7 | 120 |
| 8 | 220 |
| 9 | 568 |
| 10 | 640 |
| 11 | 666 |
| 12 | 1205 |
| 13 | 1600 |
| 14 | 2479 |
| 15 | 2482 |
| 16 | 2939 |
| 17 | 3077 |
| 18 | 8649 |
| 19 | 9520 |
| 20 | 12407 |
| 21 | 33421 |
| 22 | 36162 |
| 23 | 41190 |
| 24 | 65340 |