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 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | -1 |
| 5 | 6 |
| 6 | 8 |
| 7 | 5 |
| 8 | -10 |
| 9 | 48 |
| 10 | 32 |
| 11 | -10 |
| 12 | 15 |
| 13 | -10 |
| 14 | 80 |
| 15 | 32 |
| 16 | 110 |
| 17 | -145 |
| 18 | 90 |
| 19 | 40 |
| 20 | 480 |
| 21 | 128 |
| 22 | -770 |
| 23 | 945 |
| 24 | -560 |
| 25 | 140 |
| 26 | 560 |
| 27 | 1344 |
| 28 | 256 |
| 29 | -13090 |
| 30 | 15365 |
| 31 | -8820 |
| 32 | 2940 |
| 33 | -6272 |
| 34 | -7168 |
| 35 | -1024 |
| 36 | 65450 |
| 37 | -74550 |
| 38 | 41825 |
| 39 | -14700 |
| 40 | 2940 |
| 41 | -13440 |
| 42 | -9216 |
| 43 | -1024 |
| 44 | 1505350 |
| 45 | -1678250 |
| 46 | 925575 |