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 | 21 |
| 2 | 24 |
| 3 | 30 |
| 4 | 33 |
| 5 | 40 |
| 6 | 42 |
| 7 | 45 |
| 8 | 48 |
| 9 | 57 |
| 10 | 60 |
| 11 | 70 |
| 12 | 72 |
| 13 | 78 |
| 14 | 85 |
| 15 | 88 |
| 16 | 93 |
| 17 | 102 |
| 18 | 112 |
| 19 | 130 |
| 20 | 133 |
| 21 | 177 |
| 22 | 190 |
| 23 | 232 |
| 24 | 253 |