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 | -1 |
3 | 7 |
4 | -37 |
5 | 371 |
6 | -4741 |
7 | 72885 |
8 | -1380541 |
9 | 29678815 |
10 | -726074821 |
11 | 19834534193 |
12 | -597434105005 |
13 | 19716033256947 |
14 | -706675332962509 |
15 | 27351721308658141 |
16 | -1136955116183424829 |
17 | 50513209770352997927 |
18 | -2388911790071698253845 |
19 | 119817073596530701766985 |
20 | -6352554087532686682163053 |