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 | 0 |
| 2 | 1 |
| 3 | -2 |
| 4 | 0 |
| 5 | -4 |
| 6 | -1 |
| 7 | -8 |
| 8 | -3 |
| 9 | -14 |
| 10 | -6 |
| 11 | -24 |
| 12 | -11 |
| 13 | -40 |
| 14 | -19 |
| 15 | -66 |
| 16 | -32 |
| 17 | -108 |
| 18 | -53 |
| 19 | -176 |
| 20 | -87 |
| 21 | -286 |
| 22 | -142 |
| 23 | -464 |
| 24 | -231 |
| 25 | -752 |
| 26 | -375 |
| 27 | -1218 |
| 28 | -608 |
| 29 | -1972 |
| 30 | -985 |
| 31 | -3192 |
| 32 | -1595 |
| 33 | -5166 |
| 34 | -2582 |
| 35 | -8360 |
| 36 | -4179 |
| 37 | -13528 |
| 38 | -6763 |
| 39 | -21890 |
| 40 | -10944 |
| 41 | -35420 |
| 42 | -17709 |
| 43 | -57312 |
| 44 | -28655 |