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 | 1 |
4 | 25 |
5 | -674 |
6 | 15211 |
7 | -331827 |
8 | 5987745 |
9 | 15901597 |
10 | -13125035449 |
11 | 1292056076070 |
12 | -103145930581319 |
13 | 7462324963409941 |
14 | -464957409070517453 |
15 | 16313974895147212801 |
16 | 2059903411953959582849 |
17 | -708700955022151333496910 |
18 | 143215213612865558214820303 |
19 | -24681846509158429152517973103 |