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 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | -2 |
| 5 | -1 |
| 6 | 3 |
| 7 | 3 |
| 8 | -4 |
| 9 | -7 |
| 10 | 4 |
| 11 | 14 |
| 12 | -1 |
| 13 | -25 |
| 14 | -9 |
| 15 | 40 |
| 16 | 33 |
| 17 | -56 |
| 18 | -82 |
| 19 | 63 |
| 20 | 171 |
| 21 | -37 |
| 22 | -316 |
| 23 | -71 |
| 24 | 524 |
| 25 | 350 |
| 26 | -769 |
| 27 | -945 |
| 28 | 943 |
| 29 | 2064 |
| 30 | -767 |
| 31 | -3952 |
| 32 | -354 |
| 33 | 6783 |
| 34 | 3539 |
| 35 | -10381 |
| 36 | -10676 |
| 37 | 13625 |
| 38 | 24596 |
| 39 | -13330 |
| 40 | -48897 |
| 41 | 2359 |
| 42 | 86823 |
| 43 | 33208 |
| 44 | -138079 |
| 45 | -117672 |
| 46 | 191694 |