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 | 4 |
| 3 | 20 |
| 4 | 30 |
| 5 | 57 |
| 6 | 59 |
| 7 | 62 |
| 8 | 76 |
| 9 | 100 |
| 10 | 111 |
| 11 | 123 |
| 12 | 136 |
| 13 | 144 |
| 14 | 145 |
| 15 | 151 |