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 | 3 |
| 2 | 32 |
| 3 | 738 |
| 4 | 615514464 |
| 5 | 5030805301520123200352256 |
| 6 | 72175948705150863615789780847197889452411340074927861143342108815392768 |