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 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 9 |
| 6 | 17 |
| 7 | 27 |
| 8 | 45 |
| 9 | 51 |
| 10 | 53 |
| 11 | 93 |
| 12 | 197 |
| 13 | 213 |
| 14 | 221 |
| 15 | 245 |
| 16 | 279 |
| 17 | 845 |
| 18 | 927 |
| 19 | 2055 |
| 20 | 2895 |
| 21 | 3615 |
| 22 | 5613 |
| 23 | 12753 |
| 24 | 15737 |
| 25 | 17813 |
| 26 | 18545 |
| 27 | 22629 |
| 28 | 47859 |
| 29 | 48797 |