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 | 11 |
| 2 | 22 |
| 3 | 32 |
| 4 | 41 |
| 5 | 51 |
| 6 | 60 |
| 7 | 71 |
| 8 | 80 |
| 9 | 91 |
| 10 | 100 |
| 11 | 111 |
| 12 | 120 |
| 13 | 131 |
| 14 | 140 |
| 15 | 151 |