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 | 1 |
| 2 | 1350 |
| 3 | 100807 |
| 4 | 4703562 |
| 5 | 179716850 |
| 6 | 6204309386 |
| 7 | 198563803019 |
| 8 | 5851197688577 |
| 9 | 157794170262819 |
| 10 | 3912513274701995 |
| 11 | 90233123783207419 |
| 12 | 1960361831058212555 |
| 13 | 40518771843257636636 |
| 14 | 801152317698519068308 |
| 15 | 15177259705860270641696 |