cp's OEIS Frontend

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.

A189442 a(n) = A140230(n) / A016116(n-1).

Table of values

n a(n)
1 1
2 3
3 1
4 -3
5 -5
6 -7
7 -1
8 7
9 9
10 11
11 1
12 -11
13 -13
14 -15
15 -1
16 15
17 17
18 19
19 1
20 -19
21 -21
22 -23
23 -1
24 23
25 25
26 27
27 1
28 -27
29 -29
30 -31
31 -1
32 31
33 33
34 35
35 1
36 -35
37 -37
38 -39
39 -1
40 39
41 41
42 43
43 1
44 -43
45 -45
46 -47
47 -1
48 47
49 49
50 51
51 1
52 -51
53 -53
54 -55
55 -1
56 55
57 57
58 59
59 1
60 -59
61 -61
62 -63
63 -1
64 63

List of values

[1, 3, 1, -3, -5, -7, -1, 7, 9, 11, 1, -11, -13, -15, -1, 15, 17, 19, 1, -19, -21, -23, -1, 23, 25, 27, 1, -27, -29, -31, -1, 31, 33, 35, 1, -35, -37, -39, -1, 39, 41, 43, 1, -43, -45, -47, -1, 47, 49, 51, 1, -51, -53, -55, -1, 55, 57, 59, 1, -59, -61, -63, -1, 63]