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 | -1 |
| 3 | -2 |
| 4 | 3 |
| 5 | -4 |
| 6 | 2 |
| 7 | 1 |
| 8 | -5 |
| 9 | 7 |
| 10 | -6 |
| 11 | 1 |
| 12 | 6 |
| 13 | -12 |
| 14 | 13 |
| 15 | -7 |
| 16 | -5 |
| 17 | 18 |
| 18 | -25 |
| 19 | 20 |
| 20 | -2 |
| 21 | -23 |
| 22 | 43 |
| 23 | -45 |
| 24 | 22 |
| 25 | 21 |
| 26 | -66 |
| 27 | 88 |
| 28 | -67 |
| 29 | 1 |
| 30 | 87 |
| 31 | -154 |
| 32 | 155 |
| 33 | -68 |
| 34 | -86 |
| 35 | 241 |
| 36 | -309 |
| 37 | 223 |
| 38 | 18 |
| 39 | -327 |
| 40 | 550 |
| 41 | -532 |
| 42 | 205 |
| 43 | 345 |
| 44 | -877 |
| 45 | 1082 |
| 46 | -737 |
| 47 | -140 |
| 48 | 1222 |
| 49 | -1959 |
| 50 | 1819 |
| 51 | -597 |
| 52 | -1362 |