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) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 225 |
| 3 | 1225 |
| 4 | 3969 |
| 5 | 9801 |
| 6 | 20449 |
| 7 | 38025 |
| 8 | 65025 |
| 9 | 104329 |
| 10 | 159201 |
| 11 | 233289 |
| 12 | 330625 |
| 13 | 455625 |
| 14 | 613089 |
| 15 | 808201 |
| 16 | 1046529 |
| 17 | 1334025 |
| 18 | 1677025 |
| 19 | 2082249 |
| 20 | 2556801 |
| 21 | 3108169 |
| 22 | 3744225 |
| 23 | 4473225 |
| 24 | 5303809 |
| 25 | 6245001 |
| 26 | 7306209 |
| 27 | 8497225 |
| 28 | 9828225 |
| 29 | 11309769 |