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 | 89 |
| 2 | 809 |
| 3 | 6569 |
| 4 | 65609 |
| 5 | 531521 |
| 6 | 538001 |
| 7 | 590489 |
| 8 | 4782977 |
| 9 | 4783697 |
| 10 | 47829689 |
| 11 | 3486784409 |
| 12 | 3491567369 |
| 13 | 3529831121 |
| 14 | 31768480097 |
| 15 | 34867844009 |
| 16 | 282430067921 |
| 17 | 285916320881 |
| 18 | 313810596089 |
| 19 | 2541865834889 |
| 20 | 22877179875449 |
| 21 | 25418658283289 |