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) |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 10 |
| 3 | 19 |
| 4 | 34 |
| 5 | 57 |
| 6 | 88 |
| 7 | 123 |
| 8 | 176 |
| 9 | 253 |
| 10 | 342 |
| 11 | 449 |
| 12 | 572 |
| 13 | 749 |
| 14 | 980 |
| 15 | 1261 |
| 16 | 1560 |
| 17 | 1903 |
| 18 | 2328 |
| 19 | 2889 |
| 20 | 3562 |
| 21 | 4377 |
| 22 | 5276 |
| 23 | 6247 |