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 | -2 |
| 2 | 1 |
| 3 | 5 |
| 4 | -4 |
| 5 | 1 |
| 6 | -16 |
| 7 | 15 |
| 8 | -6 |
| 9 | 1 |
| 10 | 60 |
| 11 | -60 |
| 12 | 29 |
| 13 | -8 |
| 14 | 1 |
| 15 | -248 |
| 16 | 256 |
| 17 | -136 |
| 18 | 47 |
| 19 | -10 |
| 20 | 1 |
| 21 | 1092 |
| 22 | -1148 |
| 23 | 644 |
| 24 | -252 |
| 25 | 69 |
| 26 | -12 |
| 27 | 1 |
| 28 | -5024 |
| 29 | 5344 |
| 30 | -3104 |
| 31 | 1312 |
| 32 | -416 |
| 33 | 95 |
| 34 | -14 |
| 35 | 1 |
| 36 | 23868 |
| 37 | -25596 |
| 38 | 15228 |
| 39 | -6780 |
| 40 | 2364 |
| 41 | -636 |
| 42 | 125 |
| 43 | -16 |
| 44 | 1 |
| 45 | -116200 |
| 46 | 125360 |
| 47 | -75896 |
| 48 | 35072 |
| 49 | -13064 |
| 50 | 3920 |
| 51 | -920 |
| 52 | 159 |
| 53 | -18 |
| 54 | 1 |
| 55 | 576708 |
| 56 | -625020 |
| 57 | 383460 |