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 | 60 |
2 | 20475 |
3 | 9373650 |
4 | 4881796920 |
5 | 2734407111744 |
6 | 1605040007778900 |
7 | 973419698810097000 |
8 | 604759111060745718000 |
9 | 382741738086972337402560 |
10 | 245810413547242455520545552 |
11 | 159759730493918131135425965280 |
12 | 104861901534978616465850670348000 |