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 | 16 |
| 2 | 512 |
| 3 | 11965 |
| 4 | 298600 |
| 5 | 7452385 |
| 6 | 186427449 |
| 7 | 4666136435 |
| 8 | 116802113451 |
| 9 | 2923892905217 |
| 10 | 73194247560765 |
| 11 | 1832287164688910 |
| 12 | 45868072086086527 |
| 13 | 1148226402670943944 |
| 14 | 28743827399125599775 |
| 15 | 719551149215186260057 |