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 | 696 |
| 2 | 161928 |
| 3 | 12599904 |
| 4 | -22912728 |
| 5 | -6132581424 |
| 6 | -107015308128 |
| 7 | -1012991092032 |
| 8 | -6676225539480 |
| 9 | -34225591158312 |
| 10 | -145164618698832 |
| 11 | -530958452207328 |
| 12 | -1722320395791072 |
| 13 | -5059903726594416 |
| 14 | -13673185634909376 |
| 15 | -34406198518205376 |
| 16 | -81397333990275864 |