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 | 44 |
| 2 | 478 |
| 3 | -107272 |
| 4 | -6810740 |
| 5 | 325937744 |
| 6 | 63991555336 |
| 7 | -35674949728 |
| 8 | -654667511547248 |
| 9 | -28389257894451520 |
| 10 | 7341419739167121376 |
| 11 | 736937848624456502144 |
| 12 | -85316424437286206533952 |
| 13 | -16647387274774084049005312 |
| 14 | 884602468694263060488292480 |