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 | 0 |
| 2 | 2 |
| 3 | 42 |
| 4 | 937 |
| 5 | 26427 |
| 6 | 937126 |
| 7 | 40290848 |
| 8 | 2036152559 |
| 9 | 118202398712 |
| 10 | 7747410863508 |
| 11 | 565695467280668 |
| 12 | 45525704815211707 |
| 13 | 4002930269942820774 |
| 14 | 381750656962679848234 |
| 15 | 39244733577786597223238 |