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 | 3 |
| 1 | -2 |
| 2 | 6 |
| 3 | 2 |
| 4 | -4 |
| 5 | 9 |
| 6 | 39 |
| 7 | -57 |
| 8 | 30 |
| 9 | -8 |
| 10 | 12 |
| 11 | 136 |
| 12 | -96 |
| 13 | -84 |
| 14 | 104 |
| 15 | -32 |
| 16 | 15 |
| 17 | 320 |
| 18 | 293 |
| 19 | -1260 |
| 20 | 1155 |
| 21 | -530 |
| 22 | 160 |
| 23 | -32 |
| 24 | 18 |
| 25 | 618 |
| 26 | 2118 |
| 27 | -4242 |
| 28 | 890 |
| 29 | 2718 |
| 30 | -2652 |
| 31 | 1088 |
| 32 | -192 |
| 33 | 21 |
| 34 | 1057 |
| 35 | 7224 |
| 36 | -5037 |
| 37 | -19208 |
| 38 | 33383 |
| 39 | -23793 |
| 40 | 9534 |
| 41 | -2632 |
| 42 | 672 |