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 | -60 |
| 2 | -240 |
| 3 | -280 |
| 4 | 840 |
| 5 | -1440 |
| 6 | -1200 |
| 7 | 3360 |
| 8 | 5040 |
| 9 | -6720 |
| 10 | -4704 |
| 11 | -15120 |
| 12 | 26880 |
| 13 | 26880 |
| 14 | -26880 |
| 15 | -17024 |
| 16 | -60480 |
| 17 | -110880 |
| 18 | 161280 |
| 19 | 129024 |
| 20 | -96768 |
| 21 | -57600 |
| 22 | 332640 |
| 23 | -604800 |
| 24 | -705600 |
| 25 | 806400 |
| 26 | 564480 |
| 27 | -322560 |
| 28 | -184320 |
| 29 | 1330560 |
| 30 | 2882880 |
| 31 | -4435200 |
| 32 | -3991680 |
| 33 | 3548160 |
| 34 | 2280960 |
| 35 | -1013760 |
| 36 | -563200 |