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 | 33 |
| 4 | 65 |
| 5 | 82 |
| 6 | 117 |
| 7 | 218 |
| 8 | 483 |
| 9 | 508 |
| 10 | 537 |
| 11 | 6430 |
| 12 | 21541 |
| 13 | 117818 |
| 14 | 3589646 |
| 15 | 7231219 |
| 16 | 8515767 |
| 17 | 13050345 |
| 18 | 47245905 |
| 19 | 50414595 |
| 20 | 104335023 |
| 21 | 217728002 |
| 22 | 1217532421 |
| 23 | 1573368218 |
| 24 | 1875543429 |
| 25 | 2269058065 |
| 26 | 11902221245 |
| 27 | 12196454655 |
| 28 | 12658724029 |