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.

A268377 Numbers n such that any prime factor of the form 4k+1 has even multiplicity.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 6
6 7
7 8
8 9
9 11
10 12
11 14
12 16
13 18
14 19
15 21
16 22
17 23
18 24
19 25
20 27
21 28
22 31
23 32
24 33
25 36
26 38
27 42
28 43
29 44
30 46
31 47
32 48
33 49
34 50
35 54
36 56
37 57
38 59
39 62
40 63
41 64
42 66
43 67
44 69
45 71
46 72
47 75
48 76
49 77
50 79
51 81
52 83
53 84
54 86
55 88
56 92
57 93
58 94
59 96
60 98
61 99
62 100
63 103
64 107
65 108
66 112
67 114
68 118
69 121
70 124
71 126
72 127
73 128
74 129
75 131
76 132
77 133

List of values

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 19, 21, 22, 23, 24, 25, 27, 28, 31, 32, 33, 36, 38, 42, 43, 44, 46, 47, 48, 49, 50, 54, 56, 57, 59, 62, 63, 64, 66, 67, 69, 71, 72, 75, 76, 77, 79, 81, 83, 84, 86, 88, 92, 93, 94, 96, 98, 99, 100, 103, 107, 108, 112, 114, 118, 121, 124, 126, 127, 128, 129, 131, 132, 133]