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 | 2187 |
| 3 | 279936 |
| 4 | 10000000 |
| 5 | 170859375 |
| 6 | 1801088541 |
| 7 | 13492928512 |
| 8 | 78364164096 |
| 9 | 373669453125 |
| 10 | 1522435234375 |
| 11 | 5455160701056 |
| 12 | 17565568854912 |
| 13 | 51676101935731 |
| 14 | 140710042265625 |
| 15 | 358318080000000 |
| 16 | 860542568759296 |
| 17 | 1962637152460137 |
| 18 | 4275360817613091 |
| 19 | 8938717390000000 |