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 | 1 |
| 3 | -13 |
| 4 | 3 |
| 5 | -6 |
| 6 | 19 |
| 7 | -24 |
| 8 | 5 |
| 9 | 19 |
| 10 | 16 |
| 11 | -9 |
| 12 | -7 |
| 13 | -23 |
| 14 | 38 |
| 15 | -212 |
| 16 | 11 |
| 17 | 14 |
| 18 | -1 |
| 19 | -85 |
| 20 | 4 |
| 21 | -22 |
| 22 | 31 |
| 23 | -181 |
| 24 | 31 |
| 25 | 72 |
| 26 | 49 |
| 27 | -21488 |
| 28 | -10 |
| 29 | -46 |
| 30 | 242 |
| 31 | 21412 |
| 32 | 21 |
| 33 | -89 |
| 34 | 20 |
| 35 | -134 |
| 36 | 37 |
| 37 | -9 |
| 38 | 123 |
| 39 | -104 |
| 40 | 36 |
| 41 | -21433 |
| 42 | 64 |
| 43 | -104 |
| 44 | 13 |
| 45 | -43 |
| 46 | 227 |
| 47 | 21475 |
| 48 | 17 |
| 49 | -16 |
| 50 | -22 |
| 51 | -246 |
| 52 | 3 |
| 53 | -63 |
| 54 | 21542 |
| 55 | 21040 |
| 56 | 66 |
| 57 | 75 |
| 58 | 104 |