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 | 3 |
| 2 | 5 |
| 3 | 7 |
| 4 | 11 |
| 5 | 31 |
| 6 | 53 |
| 7 | 71 |
| 8 | 73 |
| 9 | 97 |
| 10 | 311 |
| 11 | 331 |
| 12 | 733 |
| 13 | 751 |
| 14 | 773 |
| 15 | 911 |
| 16 | 953 |
| 17 | 971 |
| 18 | 977 |
| 19 | 991 |
| 20 | 997 |
| 21 | 3331 |
| 22 | 5333 |
| 23 | 5531 |
| 24 | 7331 |
| 25 | 7333 |
| 26 | 7753 |
| 27 | 9311 |
| 28 | 9511 |
| 29 | 9533 |
| 30 | 9551 |
| 31 | 9733 |
| 32 | 9931 |
| 33 | 9973 |
| 34 | 33311 |
| 35 | 33331 |
| 36 | 55331 |
| 37 | 55333 |
| 38 | 55511 |
| 39 | 73331 |
| 40 | 75511 |
| 41 | 75533 |
| 42 | 75553 |
| 43 | 77551 |
| 44 | 77711 |