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 | 645120 |
1 | 20643840 |
2 | 1486356480 |
3 | 178362777600 |
4 | 31391848857600 |
5 | 7534043725824000 |
6 | 2350621642457088000 |
7 | 921443683843178496000 |
8 | 442292968244725678080000 |
9 | 254760749708961990574080000 |