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 | 1369 |
| 3 | 93025 |
| 4 | 6974881 |
| 5 | 553425625 |
| 6 | 45558768025 |
| 7 | 3848757330625 |
| 8 | 331434586569025 |
| 9 | 28966516730025625 |
| 10 | 2561512789823546329 |
| 11 | 228690489716580520225 |
| 12 | 20579914168308199841761 |
| 13 | 1864413002713001259355225 |
| 14 | 169871744046114667846619929 |
| 15 | 15554069096581207471331850625 |