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 | 11 |
| 2 | -7 |
| 3 | -2893 |
| 4 | -29135 |
| 5 | 1160731 |
| 6 | 31414441 |
| 7 | -545882557 |
| 8 | -34152047263 |
| 9 | 183311218475 |
| 10 | 41359581850201 |
| 11 | 220317040704211 |
| 12 | -55810803797336687 |
| 13 | -952325816292371653 |
| 14 | 82393593539552158985 |
| 15 | 2612897391731003751011 |
| 16 | -129453828286899103990079 |