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 | 2160 |
| 2 | 19568 |
| 3 | 177136 |
| 4 | 1594304 |
| 5 | 14348784 |
| 6 | 129140160 |
| 7 | 1162261440 |
| 8 | 10460353136 |
| 9 | 94143178736 |
| 10 | 847288609392 |
| 11 | 7625597484912 |
| 12 | 68630377364848 |
| 13 | 617673396283888 |
| 14 | 5559060566555504 |
| 15 | 50031545098999664 |
| 16 | 450283905890997360 |
| 17 | 4052555153018976240 |
| 18 | 36472996377170786288 |