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 | -368 |
| 3 | -17955 |
| 4 | -241408 |
| 5 | -1704293 |
| 6 | -7091712 |
| 7 | -4521799 |
| 8 | 295763968 |
| 9 | 4772359863 |
| 10 | 60917364224 |
| 11 | 740650422997 |
| 12 | 8910940667904 |
| 13 | 106982600879699 |
| 14 | 1283897803502080 |
| 15 | 15406983131226993 |
| 16 | 184884190175559680 |