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 | 18 |
3 | 144 |
4 | 0 |
5 | -28200 |
6 | -814968 |
7 | -15203328 |
8 | 0 |
9 | 16696909080 |
10 | 893794451000 |
11 | 25789252433472 |
12 | 0 |
13 | -54804262577596532 |
14 | -4044941639317807200 |
15 | -161017938434267136000 |
16 | 0 |
17 | 621130358284578576358416 |
18 | 59512584052525004199214632 |
19 | 3008072527724272784969384000 |
20 | 0 |