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) |
|---|---|
| 0 | 0 |
| 1 | 4 |
| 2 | 13 |
| 3 | 15 |
| 4 | 42 |
| 5 | 56 |
| 6 | 59 |
| 7 | 77 |
| 8 | 93 |
| 9 | 116 |
| 10 | 126 |
| 11 | 138 |
| 12 | 146 |
| 13 | 174 |
| 14 | 214 |
| 15 | 221 |
| 16 | 240 |
| 17 | 245 |
| 18 | 246 |