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) |
|---|---|
| 0 | 53 |
| 1 | 75 |
| 2 | 1311 |
| 3 | 1917 |
| 4 | 3129 |
| 5 | 4341 |
| 6 | 6159 |
| 7 | 7371 |
| 8 | 103101 |
| 9 | 109107 |
| 10 | 139137 |
| 11 | 151149 |
| 12 | 181179 |
| 13 | 193191 |
| 14 | 199197 |
| 15 | 229227 |
| 16 | 241239 |
| 17 | 271269 |
| 18 | 283281 |
| 19 | 313311 |
| 20 | 349347 |
| 21 | 421419 |
| 22 | 433431 |
| 23 | 463461 |
| 24 | 523521 |
| 25 | 571569 |
| 26 | 601599 |
| 27 | 619617 |
| 28 | 643641 |
| 29 | 661659 |
| 30 | 811809 |
| 31 | 823821 |
| 32 | 829827 |
| 33 | 859857 |
| 34 | 883881 |
| 35 | 10211019 |
| 36 | 10331031 |
| 37 | 10511049 |
| 38 | 10631061 |
| 39 | 10931091 |
| 40 | 11531151 |