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 | 5 |
| 2 | 59 |
| 3 | 89 |
| 4 | 569 |
| 5 | 599 |
| 6 | 659 |
| 7 | 859 |
| 8 | 5569 |
| 9 | 5659 |
| 10 | 5669 |
| 11 | 5689 |
| 12 | 5869 |
| 13 | 6569 |
| 14 | 6599 |
| 15 | 6659 |
| 16 | 6689 |
| 17 | 6869 |
| 18 | 6899 |
| 19 | 6959 |
| 20 | 8599 |
| 21 | 8669 |
| 22 | 8689 |
| 23 | 8699 |
| 24 | 8969 |
| 25 | 8999 |
| 26 | 9689 |
| 27 | 9859 |
| 28 | 55589 |
| 29 | 55889 |
| 30 | 56569 |
| 31 | 56599 |
| 32 | 56659 |
| 33 | 56989 |
| 34 | 56999 |
| 35 | 58699 |
| 36 | 58889 |
| 37 | 59659 |
| 38 | 59669 |
| 39 | 59699 |
| 40 | 59999 |
| 41 | 65599 |
| 42 | 65699 |
| 43 | 65899 |