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) |
|---|---|
| 10 | 1 |
| 11 | -10 |
| 12 | 45 |
| 13 | -120 |
| 14 | 200 |
| 15 | -162 |
| 16 | -160 |
| 17 | 810 |
| 18 | -1530 |
| 19 | 1730 |
| 20 | -749 |
| 21 | -1630 |
| 22 | 4755 |
| 23 | -7070 |
| 24 | 6700 |
| 25 | -2450 |
| 26 | -5295 |
| 27 | 14070 |
| 28 | -20010 |
| 29 | 19350 |
| 30 | -10157 |
| 31 | -6290 |
| 32 | 25515 |
| 33 | -40660 |
| 34 | 44940 |
| 35 | -34268 |
| 36 | 9180 |
| 37 | 24510 |
| 38 | -57195 |
| 39 | 78060 |
| 40 | -79087 |
| 41 | 56610 |
| 42 | -13935 |
| 43 | -39600 |
| 44 | 89805 |
| 45 | -121638 |
| 46 | 125405 |