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 | 25 |
| 2 | 1225 |
| 3 | 2601 |
| 4 | 13689 |
| 5 | 21025 |
| 6 | 61009 |
| 7 | 82369 |
| 8 | 180625 |
| 9 | 227529 |
| 10 | 423801 |
| 11 | 511225 |
| 12 | 855625 |
| 13 | 1002001 |
| 14 | 1555009 |
| 15 | 1782225 |
| 16 | 2614689 |
| 17 | 2948089 |
| 18 | 4141225 |
| 19 | 4609609 |
| 20 | 6255001 |
| 21 | 6890625 |
| 22 | 9090225 |
| 23 | 9928801 |
| 24 | 12794929 |
| 25 | 13875625 |
| 26 | 17530969 |
| 27 | 18896409 |
| 28 | 23474025 |
| 29 | 25170289 |
| 30 | 30813601 |