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 | 1 |
| 1 | -5 |
| 2 | 5 |
| 3 | 10 |
| 4 | -15 |
| 5 | -5 |
| 6 | -10 |
| 7 | 30 |
| 8 | 25 |
| 9 | -35 |
| 10 | 5 |
| 11 | -60 |
| 12 | 30 |
| 13 | 60 |
| 14 | -30 |
| 15 | 10 |
| 16 | -55 |
| 17 | 80 |
| 18 | 35 |
| 19 | -100 |
| 20 | -15 |
| 21 | -60 |
| 22 | 60 |
| 23 | 110 |
| 24 | -50 |
| 25 | -5 |
| 26 | -60 |
| 27 | 100 |
| 28 | 90 |
| 29 | -150 |
| 30 | -10 |
| 31 | -160 |
| 32 | 105 |
| 33 | 120 |
| 34 | -80 |
| 35 | 30 |
| 36 | -105 |
| 37 | 180 |
| 38 | 100 |
| 39 | -120 |
| 40 | 25 |
| 41 | -210 |
| 42 | 60 |
| 43 | 210 |
| 44 | -180 |
| 45 | -35 |
| 46 | -110 |
| 47 | 230 |
| 48 | 110 |
| 49 | -215 |
| 50 | 5 |
| 51 | -160 |
| 52 | 180 |
| 53 | 260 |