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 | 251610 |
| 3 | 302752867740 |
| 4 | 9178323524804624 |
| 5 | 28125393244553141210 |
| 6 | 19909522361922032493690 |
| 7 | 5116530046996205504668323 |
| 8 | 626072069382507442113224128 |
| 9 | 43460016875695276108491159279 |