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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 23 |
| 6 | 37 |
| 7 | 53 |
| 8 | 73 |
| 9 | 237 |
| 10 | 373 |
| 11 | 537 |
| 12 | 737 |
| 13 | 2373 |
| 14 | 3737 |
| 15 | 5373 |
| 16 | 7373 |
| 17 | 23737 |
| 18 | 37373 |
| 19 | 53737 |
| 20 | 73737 |
| 21 | 237373 |
| 22 | 373737 |
| 23 | 537373 |
| 24 | 737373 |
| 25 | 2373737 |
| 26 | 3737373 |
| 27 | 5373737 |
| 28 | 7373737 |
| 29 | 23737373 |
| 30 | 37373737 |
| 31 | 53737373 |
| 32 | 73737373 |
| 33 | 237373737 |
| 34 | 373737373 |
| 35 | 537373737 |
| 36 | 737373737 |