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 | 38 |
| 2 | -14 |
| 3 | -111340 |
| 4 | -4169684 |
| 5 | 490886888 |
| 6 | 49050698104 |
| 7 | -2430351968272 |
| 8 | -592964799643760 |
| 9 | 5814962971461728 |
| 10 | 8001852693840964384 |
| 11 | 219288242242044652352 |
| 12 | -120000760298623690001216 |
| 13 | -8396695977614513457596800 |
| 14 | 1955419963550761908894369664 |