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 | 2 |
| 2 | -1 |
| 3 | 7 |
| 4 | -10 |
| 5 | 1 |
| 6 | 38 |
| 7 | -71 |
| 8 | 28 |
| 9 | -1 |
| 10 | 281 |
| 11 | -610 |
| 12 | 357 |
| 13 | -60 |
| 14 | 1 |
| 15 | 2634 |
| 16 | -6329 |
| 17 | 4620 |
| 18 | -1253 |
| 19 | 110 |
| 20 | -1 |
| 21 | 29919 |
| 22 | -77530 |
| 23 | 65613 |
| 24 | -23348 |
| 25 | 3514 |
| 26 | -182 |
| 27 | 1 |
| 28 | 399342 |
| 29 | -1098271 |
| 30 | 1036044 |
| 31 | -442349 |
| 32 | 90800 |
| 33 | -8442 |
| 34 | 280 |
| 35 | -1 |
| 36 | 6125265 |