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 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | -1 |
| 9 | 3 |
| 10 | 0 |
| 11 | 8 |
| 12 | 4 |
| 13 | -5 |
| 14 | 10 |
| 15 | 1 |
| 16 | -11 |
| 17 | -13 |
| 18 | -40 |
| 19 | -19 |
| 20 | -99 |
| 21 | 33 |
| 22 | -63 |
| 23 | 91 |
| 24 | 88 |
| 25 | 148 |
| 26 | -4 |
| 27 | -805 |
| 28 | 185 |
| 29 | 613 |
| 30 | -159 |
| 31 | -3530 |
| 32 | -2419 |
| 33 | -5593 |
| 34 | -4263 |
| 35 | 6633 |
| 36 | -553 |
| 37 | -3187 |
| 38 | -5923 |
| 39 | -40742 |