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.

A001826 Number of divisors of n of the form 4k+1.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 2
6 1
7 1
8 1
9 2
10 2
11 1
12 1
13 2
14 1
15 2
16 1
17 2
18 2
19 1
20 2
21 2
22 1
23 1
24 1
25 3
26 2
27 2
28 1
29 2
30 2
31 1
32 1
33 2
34 2
35 2
36 2
37 2
38 1
39 2
40 2
41 2
42 2
43 1
44 1
45 4
46 1
47 1
48 1
49 2
50 3
51 2
52 2
53 2
54 2
55 2
56 1
57 2
58 2
59 1
60 2
61 2
62 1
63 3
64 1
65 4
66 2
67 1
68 2
69 2
70 2
71 1
72 2
73 2
74 2
75 3
76 1
77 2
78 2
79 1
80 2
81 3
82 2
83 1
84 2
85 4
86 1
87 2
88 1
89 2
90 4
91 2
92 1
93 2
94 1
95 2
96 1
97 2
98 2
99 3
100 3
101 2
102 2
103 1
104 2
105 4

List of values

[1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1, 1, 3, 2, 2, 1, 2, 2, 1, 1, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 1, 1, 4, 1, 1, 1, 2, 3, 2, 2, 2, 2, 2, 1, 2, 2, 1, 2, 2, 1, 3, 1, 4, 2, 1, 2, 2, 2, 1, 2, 2, 2, 3, 1, 2, 2, 1, 2, 3, 2, 1, 2, 4, 1, 2, 1, 2, 4, 2, 1, 2, 1, 2, 1, 2, 2, 3, 3, 2, 2, 1, 2, 4]