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) |
|---|---|
| 0 | 1 |
| 1 | -1032 |
| 2 | 244872 |
| 3 | 11293536 |
| 4 | -12738264 |
| 5 | -6174312624 |
| 6 | -106952602464 |
| 7 | -1012788556608 |
| 8 | -6677393391000 |
| 9 | -34223823782376 |
| 10 | -145162615601232 |
| 11 | -530968614112224 |
| 12 | -1722312703896288 |
| 13 | -5059890748287984 |
| 14 | -13673195356609728 |
| 15 | -34406230066992576 |
| 16 | -81397361282611992 |