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 | 1 |
| 2 | 5 |
| 3 | 25 |
| 4 | 125 |
| 5 | 205 |
| 6 | 625 |
| 7 | 1025 |
| 8 | 2525 |
| 9 | 3125 |
| 10 | 5125 |
| 11 | 8405 |
| 12 | 12625 |
| 13 | 15625 |
| 14 | 25625 |
| 15 | 42025 |
| 16 | 63125 |
| 17 | 78125 |
| 18 | 103525 |
| 19 | 128125 |
| 20 | 168305 |
| 21 | 202525 |
| 22 | 210125 |
| 23 | 255025 |
| 24 | 315625 |
| 25 | 344605 |
| 26 | 390625 |
| 27 | 517625 |
| 28 | 640625 |
| 29 | 841525 |
| 30 | 875125 |
| 31 | 1012625 |
| 32 | 1050625 |
| 33 | 1275125 |