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 | 512 |
| 2 | 19683 |
| 3 | 1953125 |
| 4 | 40353607 |
| 5 | 2357947691 |
| 6 | 10604499373 |
| 7 | 118587876497 |
| 8 | 322687697779 |
| 9 | 1801152661463 |
| 10 | 14507145975869 |
| 11 | 26439622160671 |
| 12 | 129961739795077 |
| 13 | 327381934393961 |
| 14 | 502592611936843 |
| 15 | 1119130473102767 |