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 | 313 |
| 3 | 353 |
| 4 | 373 |
| 5 | 383 |
| 6 | 3023 |
| 7 | 3083 |
| 8 | 3163 |
| 9 | 3203 |
| 10 | 3253 |
| 11 | 3313 |
| 12 | 3323 |
| 13 | 3343 |
| 14 | 3373 |
| 15 | 3413 |
| 16 | 3433 |
| 17 | 3463 |
| 18 | 3533 |
| 19 | 3583 |
| 20 | 3593 |
| 21 | 3613 |
| 22 | 3623 |
| 23 | 3643 |
| 24 | 3673 |
| 25 | 3733 |
| 26 | 3793 |
| 27 | 3803 |
| 28 | 3823 |
| 29 | 3833 |
| 30 | 3853 |
| 31 | 3863 |
| 32 | 3923 |
| 33 | 3943 |
| 34 | 30013 |
| 35 | 30103 |
| 36 | 30113 |
| 37 | 30133 |
| 38 | 30203 |
| 39 | 30223 |
| 40 | 30253 |
| 41 | 30293 |