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 | 3 |
| 3 | 3 |
| 4 | 4 |
| 5 | 3 |
| 6 | 5 |
| 7 | 2 |
| 8 | 7 |
| 9 | -1 |
| 10 | 12 |
| 11 | -9 |
| 12 | 25 |
| 13 | -30 |
| 14 | 59 |
| 15 | -85 |
| 16 | 148 |
| 17 | -229 |
| 18 | 381 |
| 19 | -606 |
| 20 | 991 |
| 21 | -1593 |
| 22 | 2588 |
| 23 | -4177 |
| 24 | 6769 |
| 25 | -10942 |
| 26 | 17715 |
| 27 | -28653 |
| 28 | 46372 |
| 29 | -75021 |
| 30 | 121397 |
| 31 | -196414 |
| 32 | 317815 |
| 33 | -514225 |
| 34 | 832044 |
| 35 | -1346265 |
| 36 | 2178313 |
| 37 | -3524574 |
| 38 | 5702891 |
| 39 | -9227461 |
| 40 | 14930356 |
| 41 | -24157813 |
| 42 | 39088173 |
| 43 | -63245982 |
| 44 | 102334159 |