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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | -9 |
| 4 | -8 |
| 5 | -5 |
| 6 | -36 |
| 7 | -35 |
| 8 | -64 |
| 9 | 729 |
| 10 | 640 |
| 11 | 385 |
| 12 | 5184 |
| 13 | 5005 |
| 14 | 8960 |
| 15 | -164025 |
| 16 | -143360 |
| 17 | -85085 |
| 18 | -1679616 |
| 19 | -1616615 |
| 20 | -2867200 |
| 21 | 72335025 |
| 22 | 63078400 |
| 23 | 37182145 |
| 24 | 967458816 |
| 25 | 929553625 |
| 26 | 1640038400 |
| 27 | -52732233225 |
| 28 | -45921075200 |
| 29 | -26957055125 |
| 30 | -870712934400 |
| 31 | -835668708875 |
| 32 | -1469474406400 |
| 33 | 57425401982025 |