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 | 0 |
| 3 | -1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 5 |
| 7 | -2 |
| 8 | -6 |
| 9 | -11 |
| 10 | -10 |
| 11 | -18 |
| 12 | -33 |
| 13 | 9 |
| 14 | 6 |
| 15 | 14 |
| 16 | 27 |
| 17 | 22 |
| 18 | -61 |
| 19 | 42 |
| 20 | 66 |
| 21 | 52 |
| 22 | -4 |
| 23 | 126 |
| 24 | -12 |
| 25 | 104 |
| 26 | -26 |
| 27 | 198 |
| 28 | 241 |
| 29 | -51 |
| 30 | -40 |
| 31 | -78 |
| 32 | -58 |
| 33 | -24 |
| 34 | 378 |
| 35 | -174 |
| 36 | -153 |
| 37 | -339 |
| 38 | -268 |
| 39 | -254 |
| 40 | 10 |
| 41 | -522 |
| 42 | 723 |
| 43 | 15 |
| 44 | -392 |
| 45 | -300 |
| 46 | 20 |
| 47 | -762 |
| 48 | 30 |
| 49 | 58 |
| 50 | -1017 |
| 51 | 83 |
| 52 | 64 |
| 53 | 174 |
| 54 | -1176 |
| 55 | 124 |