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 | 18 |
| 3 | 96 |
| 4 | 175 |
| 5 | 1944 |
| 6 | 11664 |
| 7 | 145152 |
| 8 | 2322432 |
| 9 | 1741824 |
| 10 | 17635968 |
| 11 | 384072192 |
| 12 | 528482304 |
| 13 | 8323596288 |
| 14 | 580717154304 |
| 15 | 142216445952 |
| 16 | 1279948013568 |
| 17 | 5973090729984 |
| 18 | 56358560858112 |
| 19 | 222995387252736 |