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 | 4 |
| 2 | 365 |
| 3 | 400 |
| 4 | 685 |
| 5 | 3200 |
| 6 | 6400 |
| 7 | 12550 |
| 8 | 12800 |
| 9 | 16525 |
| 10 | 25600 |
| 11 | 51200 |
| 12 | 225125 |
| 13 | 70463125 |
| 14 | 271094125 |
| 15 | 431434441 |