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 | 4 |
| 2 | 15 |
| 3 | 16 |
| 4 | 24 |
| 5 | 28 |
| 6 | 36 |
| 7 | 40 |
| 8 | 55 |
| 9 | 60 |
| 10 | 63 |
| 11 | 64 |
| 12 | 87 |
| 13 | 88 |
| 14 | 96 |
| 15 | 100 |
| 16 | 112 |
| 17 | 124 |
| 18 | 132 |
| 19 | 135 |
| 20 | 144 |
| 21 | 159 |
| 22 | 160 |
| 23 | 168 |
| 24 | 175 |
| 25 | 196 |
| 26 | 216 |
| 27 | 220 |
| 28 | 231 |
| 29 | 232 |
| 30 | 240 |
| 31 | 247 |