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 | 23 |
| 2 | 31 |
| 3 | 139 |
| 4 | 211 |
| 5 | 239 |
| 6 | 419 |
| 7 | 491 |
| 8 | 499 |
| 9 | 563 |
| 10 | 643 |
| 11 | 743 |
| 12 | 751 |
| 13 | 823 |
| 14 | 1291 |
| 15 | 1319 |
| 16 | 1427 |
| 17 | 1931 |
| 18 | 2039 |
| 19 | 2687 |
| 20 | 2767 |
| 21 | 3011 |
| 22 | 3119 |
| 23 | 3163 |
| 24 | 3191 |
| 25 | 3299 |
| 26 | 3307 |
| 27 | 3803 |
| 28 | 3919 |
| 29 | 4027 |
| 30 | 4091 |
| 31 | 4099 |
| 32 | 4423 |
| 33 | 4703 |
| 34 | 4999 |
| 35 | 5323 |
| 36 | 5639 |
| 37 | 5647 |
| 38 | 6007 |
| 39 | 6043 |
| 40 | 6079 |
| 41 | 6323 |
| 42 | 6691 |
| 43 | 6719 |
| 44 | 6763 |
| 45 | 7331 |