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 | -2 |
| 3 | -3 |
| 4 | -3 |
| 5 | 1 |
| 6 | 5 |
| 7 | 12 |
| 8 | 15 |
| 9 | 13 |
| 10 | 4 |
| 11 | -13 |
| 12 | -38 |
| 13 | -62 |
| 14 | -75 |
| 15 | -76 |
| 16 | -44 |
| 17 | 17 |
| 18 | 114 |
| 19 | 225 |
| 20 | 337 |
| 21 | 411 |
| 22 | 419 |
| 23 | 311 |
| 24 | 68 |
| 25 | -324 |
| 26 | -836 |
| 27 | -1405 |
| 28 | -1947 |
| 29 | -2305 |
| 30 | -2338 |
| 31 | -1865 |
| 32 | -787 |
| 33 | 1001 |
| 34 | 3396 |
| 35 | 6261 |
| 36 | 9216 |
| 37 | 11785 |
| 38 | 13281 |
| 39 | 13036 |
| 40 | 10285 |
| 41 | 4502 |
| 42 | -4619 |
| 43 | -16918 |
| 44 | -31657 |
| 45 | -47463 |
| 46 | -62182 |
| 47 | -73112 |
| 48 | -76925 |