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 | 3 |
| 4 | 4 |
| 5 | 9 |
| 6 | 10 |
| 7 | 12 |
| 8 | 13 |
| 9 | 16 |
| 10 | 22 |
| 11 | 25 |
| 12 | 27 |
| 13 | 30 |
| 14 | 36 |
| 15 | 39 |
| 16 | 40 |
| 17 | 42 |
| 18 | 43 |
| 19 | 48 |
| 20 | 49 |
| 21 | 51 |
| 22 | 52 |
| 23 | 55 |
| 24 | 61 |
| 25 | 64 |
| 26 | 66 |
| 27 | 69 |
| 28 | 75 |