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 | 781 |
| 2 | 3281 |
| 3 | 3781 |
| 4 | 3881 |
| 5 | 3901 |
| 6 | 3905 |
| 7 | 15781 |
| 8 | 16281 |
| 9 | 16381 |
| 10 | 16401 |
| 11 | 16405 |
| 12 | 18781 |
| 13 | 18881 |
| 14 | 18901 |
| 15 | 18905 |
| 16 | 19381 |
| 17 | 19401 |
| 18 | 19405 |
| 19 | 19501 |
| 20 | 19505 |
| 21 | 19525 |
| 22 | 78281 |
| 23 | 78781 |
| 24 | 78881 |
| 25 | 78901 |
| 26 | 78905 |
| 27 | 81281 |
| 28 | 81381 |
| 29 | 81401 |
| 30 | 81405 |
| 31 | 81881 |
| 32 | 81901 |
| 33 | 81905 |
| 34 | 82001 |
| 35 | 82005 |
| 36 | 82025 |
| 37 | 93781 |
| 38 | 93881 |
| 39 | 93901 |