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 | 1048576 |
| 2 | 282475249 |
| 3 | 10000000000 |
| 4 | 137858491849 |
| 5 | 1099511627776 |
| 6 | 6131066257801 |
| 7 | 26559922791424 |
| 8 | 95367431640625 |
| 9 | 296196766695424 |
| 10 | 819628286980801 |
| 11 | 2064377754059776 |
| 12 | 4808584372417849 |
| 13 | 10485760000000000 |
| 14 | 21611482313284249 |
| 15 | 42420747482776576 |
| 16 | 79792266297612001 |