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.

A334813 Arithmetic numbers k (A003601) such that sigma(k)/d(k) is also an arithmetic number, where d(k) is the number of divisors of k (A000005) and sigma(k) is their sum (A000203).

Table of values

n a(n)
1 1
2 5
3 6
4 11
5 13
6 14
7 15
8 20
9 29
10 37
11 38
12 39
13 41
14 43
15 44
16 45
17 49
18 53
19 54
20 56
21 57
22 59
23 60
24 61
25 65
26 68
27 73
28 78
29 83
30 85
31 86
32 87
33 89
34 95
35 96
36 97
37 101
38 102
39 107
40 109
41 110
42 111
43 113
44 114
45 116
46 118
47 123
48 125
49 129
50 131
51 134
52 135
53 137
54 139
55 142
56 143
57 145
58 147
59 150
60 153

List of values

[1, 5, 6, 11, 13, 14, 15, 20, 29, 37, 38, 39, 41, 43, 44, 45, 49, 53, 54, 56, 57, 59, 60, 61, 65, 68, 73, 78, 83, 85, 86, 87, 89, 95, 96, 97, 101, 102, 107, 109, 110, 111, 113, 114, 116, 118, 123, 125, 129, 131, 134, 135, 137, 139, 142, 143, 145, 147, 150, 153]

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

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