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 | 0 |
| 2 | 4 |
| 3 | 12 |
| 4 | 28 |
| 5 | 45 |
| 6 | 95 |
| 7 | 143 |
| 8 | 236 |
| 9 | 272 |
| 10 | 411 |
| 11 | 479 |
| 12 | 630 |
| 13 | 664 |
| 14 | 742 |
| 15 | 757 |
| 16 | 741 |
| 17 | 706 |
| 18 | 580 |
| 19 | 528 |
| 20 | 379 |
| 21 | 341 |
| 22 | 205 |
| 23 | 166 |
| 24 | 84 |
| 25 | 62 |
| 26 | 34 |
| 27 | 13 |
| 28 | 4 |
| 29 | 2 |