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.

A170817 a(n) = product of distinct primes of form 4k+1 that divide n.

Table of values

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

List of values

[1, 1, 1, 1, 5, 1, 1, 1, 1, 5, 1, 1, 13, 1, 5, 1, 17, 1, 1, 5, 1, 1, 1, 1, 5, 13, 1, 1, 29, 5, 1, 1, 1, 17, 5, 1, 37, 1, 13, 5, 41, 1, 1, 1, 5, 1, 1, 1, 1, 5, 17, 13, 53, 1, 5, 1, 1, 29, 1, 5, 61, 1, 1, 1, 65, 1, 1, 17, 1, 5, 1, 1, 73, 37, 5, 1, 1, 13, 1, 5, 1, 41, 1, 1, 85, 1, 29, 1]