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 | 1096744 |
| 2 | 2836295 |
| 3 | 4473671462 |
| 4 | 23040925705 |
| 5 | 13579716377989 |
| 6 | 119429556097859 |