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 | -5 |
| 4 | -1 |
| 5 | -7 |
| 6 | 9 |
| 7 | -7 |
| 8 | -5 |
| 9 | -6 |
| 10 | 1 |
| 11 | -41 |
| 12 | 5 |
| 13 | -9 |
| 14 | 3 |
| 15 | 33 |
| 16 | -1 |
| 17 | -47 |
| 18 | -6 |
| 19 | -11 |
| 20 | 19 |
| 21 | 27 |
| 22 | 63 |
| 23 | -53 |
| 24 | 41 |
| 25 | 36 |
| 26 | 1 |
| 27 | 136 |
| 28 | 7 |
| 29 | -59 |
| 30 | 7 |
| 31 | -9 |
| 32 | 25 |
| 33 | 369 |
| 34 | 77 |
| 35 | 43 |
| 36 | 16 |
| 37 | -59 |
| 38 | -49 |
| 39 | -157 |
| 40 | -9 |
| 41 | -317 |
| 42 | -19 |
| 43 | -73 |
| 44 | -13 |
| 45 | -10 |
| 46 | -21 |
| 47 | -359 |
| 48 | -53 |
| 49 | -38 |
| 50 | -52 |
| 51 | 139 |
| 52 | -105 |
| 53 | -401 |
| 54 | -348 |
| 55 | 473 |
| 56 | -23 |
| 57 | -263 |
| 58 | -51 |
| 59 | -443 |
| 60 | -201 |
| 61 | -11 |
| 62 | 5 |
| 63 | 292 |
| 64 | 23 |
| 65 | 65 |
| 66 | -893 |
| 67 | -69 |
| 68 | -5 |
| 69 | 253 |
| 70 | 31 |