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 | -2 |
| 3 | 5 |
| 4 | 5 |
| 5 | -7 |
| 6 | -13 |
| 7 | 2 |
| 8 | 29 |
| 9 | 19 |
| 10 | -47 |
| 11 | -68 |
| 12 | 43 |
| 13 | 151 |
| 14 | 31 |
| 15 | -246 |
| 16 | -237 |
| 17 | 267 |
| 18 | 611 |
| 19 | -34 |
| 20 | -1078 |
| 21 | -707 |
| 22 | 1327 |
| 23 | 2149 |
| 24 | -701 |
| 25 | -4118 |
| 26 | -1760 |
| 27 | 5611 |
| 28 | 6904 |
| 29 | -4361 |
| 30 | -14463 |
| 31 | -3123 |
| 32 | 21453 |
| 33 | 20320 |
| 34 | -20510 |
| 35 | -47501 |
| 36 | -426 |
| 37 | 76389 |
| 38 | 54711 |
| 39 | -84119 |
| 40 | -147200 |
| 41 | 30748 |
| 42 | 256922 |
| 43 | 132152 |
| 44 | -315913 |
| 45 | -432648 |
| 46 | 196632 |