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 | -4 |
| 3 | -6 |
| 4 | -8 |
| 5 | -9 |
| 6 | -12 |
| 7 | -15 |
| 8 | -16 |
| 9 | -25 |
| 10 | -29 |
| 11 | 35 |
| 12 | -43 |
| 13 | 51 |
| 14 | -72 |
| 15 | 73 |
| 16 | -88 |
| 17 | 96 |
| 18 | -113 |
| 19 | -132 |
| 20 | -134 |
| 21 | -154 |
| 22 | 240 |
| 23 | -258 |
| 24 | -278 |
| 25 | -368 |
| 26 | 432 |
| 27 | 550 |
| 28 | -683 |
| 29 | -847 |
| 30 | 1060 |
| 31 | -1078 |
| 32 | 1240 |
| 33 | -1447 |
| 34 | -2573 |
| 35 | 2845 |
| 36 | -3448 |
| 37 | -4610 |
| 38 | -6226 |
| 39 | 6695 |
| 40 | -8565 |
| 41 | 9132 |
| 42 | 10246 |
| 43 | -15335 |
| 44 | -17334 |
| 45 | 21777 |
| 46 | -25071 |