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 | 60 |
| 3 | 4013 |
| 4 | 126903 |
| 5 | 3786544 |
| 6 | 112687158 |
| 7 | 3370860734 |
| 8 | 101584123289 |
| 9 | 3080052428762 |
| 10 | 93872530904247 |
| 11 | 2873222643510833 |
| 12 | 88260410746680709 |
| 13 | 2719519768455485871 |
| 14 | 84016899402147182297 |
| 15 | 2601591974148719198874 |