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 | -4 |
| 3 | -5 |
| 4 | -3 |
| 5 | 23 |
| 6 | 44 |
| 7 | 104 |
| 8 | 70 |
| 9 | -93 |
| 10 | -465 |
| 11 | -1155 |
| 12 | -1882 |
| 13 | -1904 |
| 14 | 804 |
| 15 | 6195 |
| 16 | 18755 |
| 17 | 33296 |
| 18 | 47327 |
| 19 | 35198 |
| 20 | -28493 |
| 21 | -176199 |
| 22 | -453792 |
| 23 | -805453 |
| 24 | -1126396 |
| 25 | -1028297 |
| 26 | -18994 |
| 27 | 2946491 |
| 28 | 8248080 |
| 29 | 16444480 |
| 30 | 25436984 |
| 31 | 30736635 |
| 32 | 22263981 |
| 33 | -16098311 |
| 34 | -102681575 |