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) |
|---|---|
| 0 | 1 |
| 1 | 32769 |
| 2 | 14381675 |
| 3 | 1088090731 |
| 4 | 31591319949 |
| 5 | 500702562701 |
| 6 | 5217746494519 |
| 7 | 39931933598775 |
| 8 | 241075504183481 |
| 9 | 1205891132094649 |
| 10 | 5177248169415651 |
| 11 | 19584269744002019 |
| 12 | 66592914588677125 |
| 13 | 206753988571902981 |