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 | -1 |
4 | 1 |
5 | 2 |
6 | -3 |
7 | -6 |
8 | 1 |
9 | 3 |
10 | 8 |
11 | 24 |
12 | -6 |
13 | -120 |
14 | -30 |
15 | -20 |
16 | 1 |
17 | 720 |
18 | 15 |
19 | -5040 |
20 | 20 |
21 | 90 |
22 | 144 |
23 | 40320 |
24 | -10 |
25 | 40 |
26 | -840 |
27 | -15 |
28 | -90 |
29 | -362880 |
30 | -120 |
31 | 3628800 |
32 | 1 |
33 | -504 |
34 | 5760 |
35 | -420 |
36 | 45 |
37 | -39916800 |
38 | -45360 |
39 | 3360 |
40 | 40 |
41 | 479001600 |
42 | 630 |
43 | -6227020800 |
44 | 504 |
45 | 210 |
46 | 403200 |
47 | 87178291200 |