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 | 17 |
| 2 | -103 |
| 3 | -15079 |
| 4 | -135215 |
| 5 | 21345217 |
| 6 | 627890089 |
| 7 | -39529818871 |
| 8 | -2394937325023 |
| 9 | 83251577454065 |
| 10 | 9864615699400249 |
| 11 | -158647716730130567 |
| 12 | -45233234080226093327 |
| 13 | -22686119865309399391 |
| 14 | 230122896835121911804745 |
| 15 | 4036590672017890484538473 |