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 | 7 |
| 2 | 196 |
| 3 | 1372 |
| 4 | 38416 |
| 5 | 268912 |
| 6 | 7529536 |
| 7 | 52706752 |
| 8 | 1475789056 |
| 9 | 10330523392 |
| 10 | 289254654976 |
| 11 | 2024782584832 |
| 12 | 56693912375296 |
| 13 | 396857386627072 |
| 14 | 11112006825558016 |
| 15 | 77784047778906112 |
| 16 | 2177953337809371136 |