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) |
|---|---|
| 1 | 0 |
| 2 | -7 |
| 3 | 31 |
| 4 | -86 |
| 5 | 182 |
| 6 | -333 |
| 7 | 549 |
| 8 | -844 |
| 9 | 1228 |
| 10 | -1715 |
| 11 | 2315 |
| 12 | -3042 |
| 13 | 3906 |
| 14 | -4921 |
| 15 | 6097 |
| 16 | -7448 |
| 17 | 8984 |
| 18 | -10719 |
| 19 | 12663 |
| 20 | -14830 |
| 21 | 17230 |
| 22 | -19877 |
| 23 | 22781 |
| 24 | -25956 |
| 25 | 29412 |
| 26 | -33163 |
| 27 | 37219 |
| 28 | -41594 |
| 29 | 46298 |
| 30 | -51345 |
| 31 | 56745 |
| 32 | -62512 |
| 33 | 68656 |
| 34 | -75191 |
| 35 | 82127 |
| 36 | -89478 |
| 37 | 97254 |
| 38 | -105469 |
| 39 | 114133 |
| 40 | -123260 |
| 41 | 132860 |