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 | 2 |
| 3 | -1 |
| 4 | -10 |
| 5 | -5 |
| 6 | 20 |
| 7 | 13 |
| 8 | -36 |
| 9 | -27 |
| 10 | 54 |
| 11 | 43 |
| 12 | -78 |
| 13 | -65 |
| 14 | 104 |
| 15 | 89 |
| 16 | -136 |
| 17 | -119 |
| 18 | 170 |
| 19 | 151 |
| 20 | -210 |
| 21 | -189 |
| 22 | 252 |
| 23 | 229 |
| 24 | -300 |
| 25 | -275 |
| 26 | 350 |
| 27 | 323 |
| 28 | -406 |
| 29 | -377 |
| 30 | 464 |
| 31 | 433 |
| 32 | -528 |
| 33 | -495 |
| 34 | 594 |
| 35 | 559 |
| 36 | -666 |
| 37 | -629 |
| 38 | 740 |
| 39 | 701 |
| 40 | -820 |
| 41 | -779 |
| 42 | 902 |
| 43 | 859 |
| 44 | -990 |
| 45 | -945 |
| 46 | 1080 |
| 47 | 1033 |
| 48 | -1176 |
| 49 | -1127 |