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 | 13 |
| 3 | 693 |
| 4 | 146821 |
| 5 | 124626530 |
| 6 | 426524622399 |
| 7 | 5893207147435867 |
| 8 | 328422072384464274577 |
| 9 | 73719657441008064407836359 |
| 10 | 66567306698774377126527799872190 |