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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 12 |
| 4 | 128 |
| 5 | 2000 |
| 6 | 41472 |
| 7 | 1075648 |
| 8 | 33554432 |
| 9 | 1224440064 |
| 10 | 51200000000 |
| 11 | 2414538435584 |
| 12 | 126806761930752 |
| 13 | 7340688973975552 |
| 14 | 464436530178424832 |
| 15 | 31886460000000000000 |
| 16 | 2361183241434822606848 |
| 17 | 187591757103747287810048 |