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 | 256 |
| 2 | 2584 |
| 3 | 132633 |
| 4 | 2696784 |
| 5 | 89796720 |
| 6 | 2275402541 |
| 7 | 66743533552 |
| 8 | 1808994829500 |
| 9 | 51125945437653 |
| 10 | 1413407939489088 |
| 11 | 39524443386479892 |
| 12 | 1098772573002280493 |
| 13 | 30637099060362271520 |
| 14 | 852972971744061721372 |
| 15 | 23765518994514834443569 |