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 | 241 |
| 2 | 2401 |
| 3 | 9121 |
| 4 | 26641 |
| 5 | 56881 |
| 6 | 117361 |
| 7 | 199921 |
| 8 | 340321 |
| 9 | 522001 |
| 10 | 794161 |
| 11 | 1113841 |
| 12 | 1604401 |
| 13 | 2131921 |
| 14 | 2874961 |
| 15 | 3721681 |
| 16 | 4845121 |
| 17 | 6024481 |
| 18 | 7659601 |
| 19 | 9306001 |
| 20 | 11513521 |
| 21 | 13825201 |
| 22 | 16702321 |
| 23 | 19622641 |
| 24 | 23553841 |
| 25 | 27334081 |