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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 96 |
| 4 | 31692 |
| 5 | 2147001636 |
| 6 | 9223371991763269704 |
| 7 | 170141183460469231473432887375376674952 |
| 8 | 57896044618658097711785492504343953920509909728243389682424010192567186540224 |