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 | 312 |
| 2 | 189072 |
| 3 | 16851744 |
| 4 | 397574736 |
| 5 | 4630888080 |
| 6 | 34415769024 |
| 7 | 187484711232 |
| 8 | 814906132560 |
| 9 | 2975516031384 |
| 10 | 9486515132640 |
| 11 | 27053112718944 |
| 12 | 70486121264832 |
| 13 | 169930915072464 |
| 14 | 384163711731072 |