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 | 2 |
| 3 | 7 |
| 4 | 111 |
| 5 | 308063 |
| 6 | 100126976263592 |
| 7 | 131867858014413288241233435594064 |
| 8 | 2804519150441879896741320496043335469582478995067528608051651559815168 |