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 | 0 |
| 2 | 512 |
| 3 | 19683 |
| 4 | 262144 |
| 5 | 1953125 |
| 6 | 10078208 |
| 7 | 40353607 |
| 8 | 134217728 |
| 9 | 387440172 |
| 10 | 1000000512 |
| 11 | 2357947691 |
| 12 | 5160042496 |
| 13 | 10604499373 |
| 14 | 20661047296 |
| 15 | 38445332183 |
| 16 | 68719476736 |
| 17 | 118587876497 |
| 18 | 198369368576 |
| 19 | 322687697779 |
| 20 | 512000262144 |
| 21 | 794320419871 |
| 22 | 1207269218304 |
| 23 | 1801152661463 |
| 24 | 2641941757952 |