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.

A251551 a(n) = A251546(n) - A251549(n).

Table of values

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

List of values

[-1, 1, -1, 1, 1, 1, 1, 1, -1, 3, 3, 3, 3, 3, -1, 7, 7, 7, 7, 7, 7, 5, 1, 1, 1, 1, 1, 1, 1, -1, 5, 5, 11, 11, 11, 11, 11, 11, 19, 19, 21, 21, 17, 17, 17, 17, 17, 23, 23, 23, 17, 17, 17, 17, 17, 25, 25, 25, 25, 25, 23, 17]