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 | 6 |
| 2 | 27 |
| 3 | 488 |
| 4 | 7974 |
| 5 | 149796 |
| 6 | 2725447 |
| 7 | 56970432 |
| 8 | 1151053821 |
| 9 | 25279412332 |
| 10 | 543871341927 |
| 11 | 12411512060544 |
| 12 | 278163517356594 |
| 13 | 6498314231705568 |
| 14 | 149846653983570795 |
| 15 | 3565206002960088128 |
| 16 | 84045618111578025105 |