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 | 16 |
| 3 | -459 |
| 4 | 4352 |
| 5 | 170707 |
| 6 | 2706048 |
| 7 | 35008265 |
| 8 | 427884544 |
| 9 | 5154997383 |
| 10 | 61907364224 |
| 11 | 742988883517 |
| 12 | 8916064616448 |
| 13 | 106993142630555 |
| 14 | 1283918359135360 |
| 15 | 15407021403726993 |
| 16 | 184884258626600960 |