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 | 84 |
2 | 27720 |
3 | 13693680 |
4 | 5354228880 |
5 | 2489716429200 |
6 | 1010824870255200 |
7 | 459492105307435200 |
8 | 189737418627305920800 |
9 | 85223723866764909426000 |
10 | 35532611270849849570013600 |
11 | 15842376246977818384652245440 |
12 | 6646596943618421076833646609600 |
13 | 2948532659526725719238433845966400 |