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 | 1 |
| 4 | 3 |
| 5 | 7 |
| 6 | 5 |
| 7 | 6 |
| 8 | -10 |
| 9 | -27 |
| 10 | -50 |
| 11 | -42 |
| 12 | -30 |
| 13 | 41 |
| 14 | 148 |
| 15 | 241 |
| 16 | 345 |
| 17 | 303 |
| 18 | 167 |
| 19 | -275 |
| 20 | -858 |
| 21 | -1685 |
| 22 | -2342 |
| 23 | -2813 |
| 24 | -2316 |
| 25 | -536 |
| 26 | 2914 |
| 27 | 8228 |
| 28 | 14531 |
| 29 | 20955 |
| 30 | 24370 |
| 31 | 22393 |
| 32 | 10265 |
| 33 | -13839 |
| 34 | -53386 |
| 35 | -104364 |
| 36 | -161593 |
| 37 | -209463 |
| 38 | -228141 |
| 39 | -188750 |
| 40 | -62023 |
| 41 | 177547 |
| 42 | 541310 |
| 43 | 1009998 |
| 44 | 1527972 |
| 45 | 1976120 |
| 46 | 2189974 |