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 | 5 |
| 2 | 75025 |
| 3 | 9006076025 |
| 4 | 332813125 |
| 5 | 54036081025 |
| 6 | 162108093025 |
| 7 | 12304690625 |
| 8 | 3662109765625 |
| 9 | 1238325212525 |
| 10 | 225150026875625 |
| 11 | 8562180281412026525 |
| 12 | 309581286250625 |
| 13 | 15197626762525 |
| 14 | 4520507828125 |
| 15 | 2059936966552758203125 |