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 | 81 |
| 2 | 1435 |
| 3 | 85929 |
| 4 | 16530709 |
| 5 | 6612746409 |
| 6 | 11092792124317 |
| 7 | 27385111938746265 |
| 8 | 497183007539695570813 |
| 9 | 7087061017965887490247401 |