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 | 1 |
| 2 | -2 |
| 3 | -3 |
| 4 | 4 |
| 5 | -3 |
| 6 | -1 |
| 7 | 7 |
| 8 | -7 |
| 9 | 2 |
| 10 | 8 |
| 11 | -14 |
| 12 | 9 |
| 13 | 6 |
| 14 | -22 |
| 15 | 23 |
| 16 | -3 |
| 17 | -28 |
| 18 | 45 |
| 19 | -26 |
| 20 | -25 |
| 21 | 73 |
| 22 | -71 |
| 23 | 1 |
| 24 | 98 |
| 25 | -144 |
| 26 | 72 |
| 27 | 97 |
| 28 | -242 |
| 29 | 216 |
| 30 | 25 |
| 31 | -339 |
| 32 | 458 |
| 33 | -191 |
| 34 | -364 |
| 35 | 797 |
| 36 | -649 |
| 37 | -173 |
| 38 | 1161 |
| 39 | -1446 |
| 40 | 476 |
| 41 | 1334 |
| 42 | -2607 |
| 43 | 1922 |
| 44 | 858 |
| 45 | -3941 |
| 46 | 4529 |
| 47 | -1064 |
| 48 | -4799 |
| 49 | 8470 |
| 50 | -5593 |
| 51 | -3735 |
| 52 | 13269 |
| 53 | -14063 |
| 54 | 1858 |
| 55 | 17004 |
| 56 | -27332 |
| 57 | 15921 |
| 58 | 15146 |
| 59 | -44336 |