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 | 75 |
| 2 | 5625 |
| 3 | 327518 |
| 4 | 18584111 |
| 5 | 1033847229 |
| 6 | 57282563287 |
| 7 | 3168082336959 |
| 8 | 175129179194410 |
| 9 | 9679245343889980 |
| 10 | 534934649110777869 |
| 11 | 29563222154411441671 |
| 12 | 1633804995808428069508 |
| 13 | 90291695709459901168342 |