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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.

A265652 Triangle read by rows: T(n,k) is the sum of the union of the divisors of n and k.

Table of values

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

List of values

[1, 3, 3, 4, 6, 4, 7, 7, 10, 7, 6, 8, 9, 12, 6, 12, 12, 12, 16, 17, 12, 8, 10, 11, 14, 13, 19, 8, 15, 15, 18, 15, 20, 24, 22, 15, 13, 15, 13, 19, 18, 21, 20, 27, 13, 18, 18, 21, 22, 18, 27, 25, 30, 30, 18, 12, 14, 15, 18, 17, 23, 19, 26, 24, 29, 12, 28, 28, 28, 28, 33, 28, 35, 36, 37, 43, 39, 28]

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

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