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 | -3 |
| 3 | -5 |
| 4 | 2 |
| 5 | -11 |
| 6 | 17 |
| 7 | -17 |
| 8 | -4 |
| 9 | 2 |
| 10 | 37 |
| 11 | -31 |
| 12 | -24 |
| 13 | -41 |
| 14 | 59 |
| 15 | 63 |
| 16 | 2 |
| 17 | -59 |
| 18 | -18 |
| 19 | -67 |
| 20 | -40 |
| 21 | 97 |
| 22 | 107 |
| 23 | -83 |
| 24 | 64 |
| 25 | 24 |
| 26 | 145 |
| 27 | 2 |
| 28 | -70 |
| 29 | -109 |
| 30 | -245 |
| 31 | -127 |
| 32 | 12 |
| 33 | 173 |
| 34 | 215 |
| 35 | 225 |
| 36 | 110 |
| 37 | -157 |
| 38 | 239 |
| 39 | 243 |
| 40 | 96 |
| 41 | -179 |
| 42 | -401 |
| 43 | -191 |
| 44 | -122 |
| 45 | -46 |
| 46 | 299 |
| 47 | -211 |
| 48 | -70 |
| 49 | 62 |
| 50 | -98 |
| 51 | 357 |
| 52 | -166 |
| 53 | -241 |
| 54 | 30 |
| 55 | 425 |