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.

A248151 Numbers n such that the sum of the divisors of n is not divisible by 4.

Table of values

n a(n)
1 1
2 2
3 4
4 5
5 8
6 9
7 10
8 13
9 16
10 17
11 18
12 20
13 25
14 26
15 29
16 32
17 34
18 36
19 37
20 40
21 41
22 45
23 49
24 50
25 52
26 53
27 58
28 61
29 64
30 68
31 72
32 73
33 74
34 80
35 81
36 82
37 89
38 90
39 97
40 98
41 100
42 101
43 104
44 106
45 109
46 113
47 116
48 117
49 121
50 122
51 128
52 136
53 137
54 144
55 146
56 148
57 149
58 153
59 157
60 160
61 162
62 164
63 169
64 173
65 178
66 180

List of values

[1, 2, 4, 5, 8, 9, 10, 13, 16, 17, 18, 20, 25, 26, 29, 32, 34, 36, 37, 40, 41, 45, 49, 50, 52, 53, 58, 61, 64, 68, 72, 73, 74, 80, 81, 82, 89, 90, 97, 98, 100, 101, 104, 106, 109, 113, 116, 117, 121, 122, 128, 136, 137, 144, 146, 148, 149, 153, 157, 160, 162, 164, 169, 173, 178, 180]

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

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