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 | 2 |
| 2 | -4 |
| 3 | 0 |
| 4 | 5 |
| 5 | -17 |
| 6 | -2 |
| 7 | 6 |
| 8 | -54 |
| 9 | -4 |
| 10 | 6 |
| 11 | -2485 |
| 12 | -8 |
| 13 | 6 |
| 14 | 101 |
| 15 | -13 |
| 16 | 5 |
| 17 | 59 |
| 18 | -20 |
| 19 | 3 |
| 20 | 45 |
| 21 | -32 |
| 22 | 0 |
| 23 | 37 |
| 24 | -51 |
| 25 | -3 |
| 26 | 31 |
| 27 | -88 |
| 28 | -8 |
| 29 | 26 |
| 30 | -192 |
| 31 | -14 |
| 32 | 21 |
| 33 | -2485 |
| 34 | -21 |
| 35 | 17 |
| 36 | 279 |
| 37 | -31 |
| 38 | 12 |
| 39 | 141 |
| 40 | -45 |
| 41 | 7 |
| 42 | 96 |
| 43 | -64 |
| 44 | 1 |
| 45 | 73 |
| 46 | -96 |
| 47 | -6 |
| 48 | 58 |
| 49 | -155 |
| 50 | -14 |
| 51 | 46 |
| 52 | -315 |
| 53 | -23 |
| 54 | 36 |
| 55 | -2485 |
| 56 | -34 |
| 57 | 28 |
| 58 | 483 |
| 59 | -49 |
| 60 | 19 |
| 61 | 228 |
| 62 | -68 |
| 63 | 11 |
| 64 | 150 |
| 65 | -96 |
| 66 | 2 |
| 67 | 111 |
| 68 | -139 |