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 | 0 |
3 | -3 |
4 | -8 |
5 | 45 |
6 | 576 |
7 | 385 |
8 | -54144 |
9 | -499527 |
10 | 4787200 |
11 | 160740261 |
12 | 558627840 |
13 | -45943496027 |
14 | -854266871808 |
15 | 8403892043625 |
16 | 590895130771456 |
17 | 4982009666876145 |
18 | -320936968832679936 |
19 | -10133752613818727987 |
20 | 75595253378088960000 |
21 | 11587542472638176520861 |