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 | 25 |
| 3 | 225 |
| 4 | 2704 |
| 5 | 29241 |
| 6 | 323761 |
| 7 | 3553225 |
| 8 | 39100009 |
| 9 | 429981696 |
| 10 | 4729725529 |
| 11 | 52022767225 |
| 12 | 572215089601 |
| 13 | 6293931930441 |
| 14 | 69228590218384 |
| 15 | 761462776998225 |
| 16 | 8375523274873225 |
| 17 | 92124512415080401 |
| 18 | 1013300979290647441 |