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 | -4 |
| 2 | 10 |
| 3 | -16 |
| 4 | 16 |
| 5 | -4 |
| 6 | -20 |
| 7 | 48 |
| 8 | -66 |
| 9 | 60 |
| 10 | -18 |
| 11 | -64 |
| 12 | 168 |
| 13 | -248 |
| 14 | 236 |
| 15 | -80 |
| 16 | -208 |
| 17 | 536 |
| 18 | -750 |
| 19 | 688 |
| 20 | -252 |
| 21 | -528 |
| 22 | 1432 |
| 23 | -2048 |
| 24 | 1908 |
| 25 | -724 |
| 26 | -1356 |
| 27 | 3648 |
| 28 | -5104 |
| 29 | 4680 |
| 30 | -1820 |
| 31 | -3088 |
| 32 | 8510 |
| 33 | -12000 |
| 34 | 11044 |
| 35 | -4368 |
| 36 | -6940 |
| 37 | 19112 |
| 38 | -26632 |
| 39 | 24304 |
| 40 | -9734 |
| 41 | -14584 |
| 42 | 40656 |
| 43 | -56784 |
| 44 | 51840 |