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 | -4 |
| 4 | 0 |
| 5 | -5 |
| 6 | 1 |
| 7 | -6 |
| 8 | -14 |
| 9 | -5 |
| 10 | 5 |
| 11 | -6 |
| 12 | -18 |
| 13 | -31 |
| 14 | -17 |
| 15 | -2 |
| 16 | 14 |
| 17 | -3 |
| 18 | -21 |
| 19 | -40 |
| 20 | -60 |
| 21 | -39 |
| 22 | -17 |
| 23 | -40 |
| 24 | -16 |
| 25 | 9 |
| 26 | 35 |
| 27 | 8 |
| 28 | -20 |
| 29 | -49 |
| 30 | -79 |
| 31 | -110 |
| 32 | -142 |
| 33 | -109 |
| 34 | -75 |
| 35 | -40 |
| 36 | -4 |
| 37 | -41 |
| 38 | -3 |
| 39 | 36 |
| 40 | 76 |
| 41 | 35 |
| 42 | -7 |
| 43 | -50 |
| 44 | -94 |
| 45 | -139 |
| 46 | -93 |
| 47 | -140 |
| 48 | -188 |
| 49 | -139 |
| 50 | -189 |
| 51 | -138 |
| 52 | -190 |
| 53 | -243 |
| 54 | -189 |
| 55 | -134 |