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 | 0 |
| 2 | 1 |
| 3 | -2 |
| 4 | 0 |
| 5 | -4 |
| 6 | 9 |
| 7 | 18 |
| 8 | 17 |
| 9 | 0 |
| 10 | 24 |
| 11 | -35 |
| 12 | 36 |
| 13 | 12 |
| 14 | -40 |
| 15 | -11 |
| 16 | 0 |
| 17 | -13 |
| 18 | -56 |
| 19 | 30 |
| 20 | -79 |
| 21 | -45 |
| 22 | -39 |
| 23 | -67 |
| 24 | 100 |
| 25 | 0 |
| 26 | 113 |
| 27 | -83 |
| 28 | -48 |
| 29 | -53 |
| 30 | -104 |
| 31 | 138 |
| 32 | -7 |
| 33 | 163 |
| 34 | -100 |
| 35 | -26 |
| 36 | 0 |
| 37 | -28 |
| 38 | -116 |
| 39 | 217 |
| 40 | 9 |
| 41 | 248 |
| 42 | -104 |
| 43 | 17 |
| 44 | 80 |
| 45 | 79 |
| 46 | 8 |
| 47 | -139 |
| 48 | 297 |
| 49 | 0 |
| 50 | 316 |
| 51 | -155 |
| 52 | 17 |
| 53 | 119 |
| 54 | 145 |
| 55 | 89 |
| 56 | -55 |