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 | -4 |
| 3 | -8 |
| 4 | -9 |
| 5 | -16 |
| 6 | -25 |
| 7 | -27 |
| 8 | -32 |
| 9 | 36 |
| 10 | -49 |
| 11 | -64 |
| 12 | -81 |
| 13 | 100 |
| 14 | -121 |
| 15 | -125 |
| 16 | -128 |
| 17 | 144 |
| 18 | -169 |
| 19 | 196 |
| 20 | 216 |
| 21 | 225 |
| 22 | -243 |
| 23 | -256 |
| 24 | -289 |
| 25 | 324 |
| 26 | -343 |
| 27 | -361 |
| 28 | 400 |
| 29 | 441 |
| 30 | 484 |
| 31 | -512 |
| 32 | -529 |
| 33 | 576 |
| 34 | -625 |
| 35 | 676 |
| 36 | -729 |
| 37 | 784 |
| 38 | -841 |
| 39 | 900 |
| 40 | -961 |
| 41 | 1000 |
| 42 | -1024 |
| 43 | 1089 |
| 44 | 1156 |
| 45 | 1225 |
| 46 | 1296 |
| 47 | -1331 |