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 | 13 |
| 3 | 311 |
| 4 | 313 |
| 5 | 419 |
| 6 | 641 |
| 7 | 643 |
| 8 | 647 |
| 9 | 653 |
| 10 | 761 |
| 11 | 983 |
| 12 | 997 |
| 13 | 9103 |
| 14 | 11131 |
| 15 | 11149 |
| 16 | 12157 |
| 17 | 12163 |
| 18 | 14197 |
| 19 | 15227 |
| 20 | 15233 |
| 21 | 18307 |
| 22 | 18311 |
| 23 | 18313 |
| 24 | 20353 |
| 25 | 20359 |
| 26 | 21379 |
| 27 | 21383 |
| 28 | 21397 |
| 29 | 22409 |
| 30 | 23431 |
| 31 | 24499 |
| 32 | 25523 |
| 33 | 25541 |
| 34 | 26557 |
| 35 | 29599 |
| 36 | 30631 |
| 37 | 30643 |
| 38 | 30661 |
| 39 | 30677 |
| 40 | 31727 |
| 41 | 33773 |