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 | 1 |
| 3 | -3 |
| 4 | -4 |
| 5 | 125 |
| 6 | -3 |
| 7 | -16807 |
| 8 | 256 |
| 9 | -19683 |
| 10 | 125 |
| 11 | -2357947691 |
| 12 | 144 |
| 13 | 1792160394037 |
| 14 | -16807 |
| 15 | 1265625 |
| 16 | 16777216 |
| 17 | 2862423051509815793 |
| 18 | -19683 |
| 19 | -5480386857784802185939 |
| 20 | 4000000 |
| 21 | 205924456521 |
| 22 | -2357947691 |
| 23 | -39471584120695485887249589623 |
| 24 | 5308416 |