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 | 311 |
| 2 | 513 |
| 3 | 1119 |
| 4 | 2331 |
| 5 | 2937 |
| 6 | 5361 |
| 7 | 5967 |
| 8 | 7179 |
| 9 | 8997 |
| 10 | 101109 |
| 11 | 131139 |
| 12 | 149157 |
| 13 | 173181 |
| 14 | 191199 |
| 15 | 233241 |
| 16 | 263271 |
| 17 | 269277 |
| 18 | 359367 |
| 19 | 389397 |
| 20 | 401409 |
| 21 | 431439 |
| 22 | 449457 |
| 23 | 479487 |
| 24 | 491499 |
| 25 | 563571 |
| 26 | 569577 |
| 27 | 593601 |
| 28 | 599607 |
| 29 | 653661 |
| 30 | 683691 |
| 31 | 701709 |
| 32 | 719727 |
| 33 | 743751 |