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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 15 |
| 8 | -19 |
| 9 | -44 |
| 10 | 0 |
| 11 | 31 |
| 12 | 33 |
| 13 | 80 |
| 14 | 43 |
| 15 | 92 |
| 16 | 0 |
| 17 | 112 |
| 18 | 305 |
| 19 | 140 |
| 20 | -77 |
| 21 | 336 |
| 22 | 261 |
| 23 | 0 |
| 24 | -103 |
| 25 | -228 |
| 26 | 129 |
| 27 | 131 |
| 28 | 268 |
| 29 | 429 |
| 30 | 292 |
| 31 | -153 |
| 32 | -805 |
| 33 | -352 |
| 34 | 189 |
| 35 | 985 |
| 36 | 2040 |
| 37 | 1260 |
| 38 | 440 |
| 39 | -693 |
| 40 | -468 |
| 41 | 239 |
| 42 | -2367 |
| 43 | -1365 |
| 44 | -285 |
| 45 | 885 |
| 46 | 596 |
| 47 | 3531 |
| 48 | 2608 |
| 49 | 3360 |
| 50 | 2752 |
| 51 | -2196 |
| 52 | 0 |
| 53 | 2709 |
| 54 | 4367 |
| 55 | 4411 |
| 56 | 2105 |