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 | 5 |
| 3 | 7 |
| 4 | 8 |
| 5 | 13 |
| 6 | 16 |
| 7 | 31 |
| 8 | 37 |
| 9 | 47 |
| 10 | 53 |
| 11 | 61 |
| 12 | 71 |
| 13 | 79 |
| 14 | 503 |
| 15 | 613 |
| 16 | 863 |
| 17 | 7741 |
| 18 | 19469 |
| 19 | 81671 |
| 20 | 94823 |
| 21 | 344293 |
| 22 | 532277 |
| 23 | 631181 |
| 24 | 637751 |
| 25 | 651821 |