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) |
|---|---|
| 6 | 1 |
| 7 | -6 |
| 8 | 15 |
| 9 | -20 |
| 10 | 9 |
| 11 | 24 |
| 12 | -65 |
| 13 | 90 |
| 14 | -75 |
| 15 | 6 |
| 16 | 90 |
| 17 | -180 |
| 18 | 220 |
| 19 | -180 |
| 20 | 66 |
| 21 | 110 |
| 22 | -264 |
| 23 | 360 |
| 24 | -365 |
| 25 | 264 |
| 26 | -66 |
| 27 | -178 |
| 28 | 375 |
| 29 | -510 |
| 30 | 496 |
| 31 | -414 |
| 32 | 180 |
| 33 | 60 |
| 34 | -330 |
| 35 | 570 |
| 36 | -622 |
| 37 | 582 |
| 38 | -390 |
| 39 | 220 |
| 40 | 96 |
| 41 | -300 |
| 42 | 621 |
| 43 | -630 |
| 44 | 705 |
| 45 | -492 |
| 46 | 300 |
| 47 | 0 |
| 48 | -235 |
| 49 | 420 |
| 50 | -570 |
| 51 | 594 |
| 52 | -735 |
| 53 | 420 |
| 54 | -420 |
| 55 | -120 |
| 56 | 219 |
| 57 | -586 |
| 58 | 360 |