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 | 10 |
4 | -27 |
5 | 316 |
6 | -3725 |
7 | 63666 |
8 | -1177687 |
9 | 25196536 |
10 | -607345209 |
11 | 16391726110 |
12 | -488872392371 |
13 | 15968546353332 |
14 | -566886190710853 |
15 | 21733419523383946 |
16 | -894910999976666415 |
17 | 39390009619800983536 |
18 | -1845602126785662907121 |
19 | 91714859182521808208694 |