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) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | -6 |
| 3 | -11 |
| 4 | -15 |
| 5 | -25 |
| 6 | -35 |
| 7 | -41 |
| 8 | -56 |
| 9 | -71 |
| 10 | -79 |
| 11 | -99 |
| 12 | -119 |
| 13 | -129 |
| 14 | -154 |
| 15 | -179 |
| 16 | -191 |
| 17 | -221 |
| 18 | -251 |
| 19 | -265 |
| 20 | -300 |
| 21 | -335 |
| 22 | -351 |
| 23 | -391 |
| 24 | -431 |
| 25 | -449 |
| 26 | -494 |
| 27 | -539 |
| 28 | -559 |
| 29 | -609 |
| 30 | -659 |
| 31 | -681 |
| 32 | -736 |
| 33 | -791 |
| 34 | -815 |
| 35 | -875 |
| 36 | -935 |
| 37 | -961 |
| 38 | -1026 |
| 39 | -1091 |
| 40 | -1119 |