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 | 4 |
| 2 | 9 |
| 3 | 49 |
| 4 | 289 |
| 5 | 841 |
| 6 | 2209 |
| 7 | 2809 |
| 8 | 3481 |
| 9 | 4489 |
| 10 | 6241 |
| 11 | 24649 |
| 12 | 29929 |
| 13 | 66049 |
| 14 | 94249 |
| 15 | 97969 |
| 16 | 121801 |
| 17 | 124609 |
| 18 | 128881 |
| 19 | 167281 |
| 20 | 201601 |
| 21 | 218089 |
| 22 | 299209 |
| 23 | 310249 |
| 24 | 332929 |
| 25 | 434281 |
| 26 | 452929 |
| 27 | 458329 |
| 28 | 546121 |
| 29 | 619369 |
| 30 | 727609 |
| 31 | 863041 |
| 32 | 2093809 |