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.

A261609 Number of composite divisors of n^2+1.

Table of values

n a(n)
1 0
2 0
3 1
4 0
5 1
6 0
7 3
8 1
9 1
10 0
11 1
12 1
13 4
14 0
15 1
16 0
17 4
18 3
19 1
20 0
21 4
22 1
23 4
24 0
25 1
26 0
27 4
28 1
29 1
30 1
31 4
32 3
33 4
34 1
35 1
36 0
37 4
38 3
39 1
40 0
41 3
42 1
43 8
44 1
45 1
46 1
47 11
48 1
49 1
50 1
51 1
52 1
53 4
54 0
55 4
56 0
57 12
58 1
59 1
60 1
61 1
62 1
63 4
64 1
65 1
66 0
67 4
68 5
69 1
70 3
71 1
72 4
73 11
74 0
75 4
76 1
77 4
78 1
79 1
80 1
81 4
82 3
83 11
84 0
85 1
86 1

List of values

[0, 0, 1, 0, 1, 0, 3, 1, 1, 0, 1, 1, 4, 0, 1, 0, 4, 3, 1, 0, 4, 1, 4, 0, 1, 0, 4, 1, 1, 1, 4, 3, 4, 1, 1, 0, 4, 3, 1, 0, 3, 1, 8, 1, 1, 1, 11, 1, 1, 1, 1, 1, 4, 0, 4, 0, 12, 1, 1, 1, 1, 1, 4, 1, 1, 0, 4, 5, 1, 3, 1, 4, 11, 0, 4, 1, 4, 1, 1, 1, 4, 3, 11, 0, 1, 1]