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 | 27 |
| 2 | 67 |
| 3 | 3416102887775247376839416334668636 |
| 4 | 3756559953325598880263233435801765 |
| 5 | 4313503800489302411917772257282209 |