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 | 524289 |
| 2 | 1162785755 |
| 3 | 276040168411 |
| 4 | 19348364235069 |
| 5 | 628433226338621 |
| 6 | 12008254925383639 |
| 7 | 155514083261229015 |
| 8 | 1494966905748847961 |
| 9 | 11350851717672992089 |
| 10 | 71159090448414546291 |
| 11 | 380639089819037473139 |
| 12 | 1781400289746069037525 |
| 13 | 7438224249324360507861 |