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 | 1 |
| 2 | 16 |
| 3 | 218 |
| 4 | 24295 |
| 5 | 864222223 |
| 6 | 164603685185 |
| 7 | 12522046031746 |
| 8 | 1206791666666515 |
| 9 | 109727160493703690 |
| 10 | 9876555555544444321 |
| 11 | 897878787878686865830 |
| 12 | 82398148148148055545260 |
| 13 | 7692222222222221358024700 |