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 | 100548 |
| 2 | 968436 |
| 3 | 5027400 |
| 4 | 48665232 |
| 5 | 48421800 |
| 6 | 468723024 |
| 7 | 845775504 |
| 8 | 938024640 |
| 9 | 26989110720 |
| 10 | 40792003200 |
| 11 | 48200025744 |
| 12 | 63433162800 |
| 13 | 303008547060 |