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 | 2187 |
| 1 | 823543 |
| 2 | 19487171 |
| 3 | 170859375 |
| 4 | 893871739 |
| 5 | 3404825447 |
| 6 | 10460353203 |
| 7 | 27512614111 |
| 8 | 64339296875 |
| 9 | 137231006679 |
| 10 | 271818611107 |
| 11 | 506623120463 |
| 12 | 897410677851 |
| 13 | 1522435234375 |
| 14 | 2488651484819 |
| 15 | 3938980639167 |
| 16 | 6060711605323 |
| 17 | 9095120158391 |
| 18 | 13348388671875 |
| 19 | 19203908986159 |