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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.

A081354 Numbers k such that sigma(k^2) modulo 4 = 3.

Table of values

n a(n)
1 2
2 4
3 5
4 6
5 8
6 12
7 13
8 14
9 15
10 16
11 17
12 18
13 22
14 24
15 28
16 29
17 32
18 35
19 36
20 37
21 38
22 39
23 41
24 42
25 44
26 45
27 46
28 48
29 50
30 51
31 53
32 54
33 55
34 56
35 61
36 62
37 64
38 66
39 72
40 73
41 76
42 84
43 86
44 87
45 88
46 89
47 91
48 92
49 94
50 95
51 96
52 97
53 98
54 100
55 101
56 105
57 108
58 109
59 111
60 112
61 113
62 114
63 115
64 117
65 118
66 119
67 123

List of values

[2, 4, 5, 6, 8, 12, 13, 14, 15, 16, 17, 18, 22, 24, 28, 29, 32, 35, 36, 37, 38, 39, 41, 42, 44, 45, 46, 48, 50, 51, 53, 54, 55, 56, 61, 62, 64, 66, 72, 73, 76, 84, 86, 87, 88, 89, 91, 92, 94, 95, 96, 97, 98, 100, 101, 105, 108, 109, 111, 112, 113, 114, 115, 117, 118, 119, 123]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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