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 | 1 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 26 |
| 7 | 39 |
| 8 | 56 |
| 9 | 79 |
| 10 | 106 |
| 11 | 138 |
| 12 | 175 |
| 13 | 221 |
| 14 | 272 |
| 15 | 331 |
| 16 | 397 |
| 17 | 471 |
| 18 | 555 |
| 19 | 648 |
| 20 | 750 |