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 | 5 |
| 2 | 41 |
| 3 | 439 |
| 4 | 5741 |
| 5 | 88889 |
| 6 | 1594405 |
| 7 | 32574371 |
| 8 | 747753161 |
| 9 | 19071735493 |
| 10 | 535461077009 |
| 11 | 16419373641455 |
| 12 | 546208347402901 |
| 13 | 19598084579455217 |
| 14 | 754617425461612781 |
| 15 | 31043368421052631579 |
| 16 | 1359040255729886061905 |