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 | 1 |
2 | -1 |
3 | 4 |
4 | -23 |
5 | 166 |
6 | -1410 |
7 | 13602 |
8 | -145803 |
9 | 1711690 |
10 | -21785618 |
11 | 298370920 |
12 | -4372151566 |
13 | 68234087624 |
14 | -1129894265272 |
15 | 19788479904366 |
16 | -365520041466291 |
17 | 7103187300763530 |
18 | -144897616964143050 |
19 | 3096285550330959336 |