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 | -3 |
| 3 | -8 |
| 4 | 49 |
| 5 | -24 |
| 6 | -960 |
| 7 | -48 |
| 8 | -3375 |
| 9 | 676 |
| 10 | -8640 |
| 11 | -120 |
| 12 | -2247392 |
| 13 | -168 |
| 14 | -34560 |
| 15 | -46080 |
| 16 | 923521 |
| 17 | -288 |
| 18 | -28789488 |
| 19 | -360 |
| 20 | -54867456 |
| 21 | -184320 |
| 22 | -216000 |
| 23 | -528 |
| 24 | -89384770560 |
| 25 | 15376 |
| 26 | -423360 |
| 27 | -512000 |
| 28 | -438939648 |
| 29 | -840 |
| 30 | -558786571200 |
| 31 | -960 |
| 32 | -992436543 |
| 33 | -1152000 |