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 | -9 |
| 3 | -27 |
| 4 | 8 |
| 5 | -125 |
| 6 | 243 |
| 7 | -343 |
| 8 | 0 |
| 9 | 0 |
| 10 | 1125 |
| 11 | -1331 |
| 12 | -216 |
| 13 | -2197 |
| 14 | 3087 |
| 15 | 3375 |
| 16 | 0 |
| 17 | -4913 |
| 18 | 0 |
| 19 | -6859 |
| 20 | -1000 |
| 21 | 9261 |
| 22 | 11979 |
| 23 | -12167 |
| 24 | 0 |
| 25 | 0 |
| 26 | 19773 |
| 27 | 0 |
| 28 | -2744 |
| 29 | -24389 |
| 30 | -30375 |
| 31 | -29791 |
| 32 | 0 |
| 33 | 35937 |
| 34 | 44217 |
| 35 | 42875 |
| 36 | 0 |
| 37 | -50653 |
| 38 | 61731 |
| 39 | 59319 |
| 40 | 0 |
| 41 | -68921 |
| 42 | -83349 |
| 43 | -79507 |
| 44 | -10648 |
| 45 | 0 |