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 | 7 |
| 4 | 23 |
| 5 | 37 |
| 6 | 73 |
| 7 | 223 |
| 8 | 227 |
| 9 | 233 |
| 10 | 277 |
| 11 | 337 |
| 12 | 373 |
| 13 | 727 |
| 14 | 733 |
| 15 | 773 |
| 16 | 2237 |
| 17 | 2273 |
| 18 | 2333 |
| 19 | 2377 |
| 20 | 2777 |
| 21 | 3323 |
| 22 | 3373 |
| 23 | 3727 |
| 24 | 3733 |
| 25 | 7237 |
| 26 | 7333 |
| 27 | 7723 |
| 28 | 7727 |
| 29 | 22273 |
| 30 | 22277 |
| 31 | 22727 |
| 32 | 22777 |
| 33 | 23227 |
| 34 | 23327 |
| 35 | 23333 |
| 36 | 23773 |
| 37 | 27277 |
| 38 | 27337 |
| 39 | 27733 |
| 40 | 27737 |
| 41 | 27773 |
| 42 | 32233 |
| 43 | 32237 |
| 44 | 32323 |