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 | 1 |
| 2 | -2 |
| 3 | 3 |
| 4 | -5 |
| 5 | 4 |
| 6 | -11 |
| 7 | 2 |
| 8 | -18 |
| 9 | 3 |
| 10 | -24 |
| 11 | -3 |
| 12 | -43 |
| 13 | -18 |
| 14 | -57 |
| 15 | -12 |
| 16 | -60 |
| 17 | -27 |
| 18 | -90 |
| 19 | -53 |
| 20 | -125 |
| 21 | -60 |
| 22 | -123 |
| 23 | -78 |
| 24 | -178 |
| 25 | -113 |
| 26 | -188 |
| 27 | -107 |
| 28 | -211 |
| 29 | -154 |
| 30 | -289 |
| 31 | -228 |
| 32 | -340 |
| 33 | -235 |
| 34 | -334 |
| 35 | -217 |
| 36 | -385 |
| 37 | -312 |
| 38 | -423 |
| 39 | -298 |
| 40 | -478 |
| 41 | -397 |
| 42 | -592 |
| 43 | -507 |
| 44 | -675 |
| 45 | -486 |
| 46 | -621 |
| 47 | -528 |
| 48 | -768 |
| 49 | -635 |
| 50 | -830 |