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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.

A381498 a(n) = sum of numbers k <= n that have the same squarefree kernel as n.

Table of values

n a(n)
1 1
2 2
3 3
4 6
5 5
6 6
7 7
8 14
9 12
10 10
11 11
12 18
13 13
14 14
15 15
16 30
17 17
18 36
19 19
20 30
21 21
22 22
23 23
24 60
25 30
26 26
27 39
28 42
29 29
30 30
31 31
32 62
33 33
34 34
35 35
36 96
37 37
38 38
39 39
40 70
41 41
42 42
43 43
44 66
45 60
46 46
47 47
48 144
49 56
50 120
51 51
52 78
53 53
54 198
55 55
56 98
57 57
58 58
59 59
60 90
61 61
62 62
63 84
64 126
65 65
66 66

List of values

[1, 2, 3, 6, 5, 6, 7, 14, 12, 10, 11, 18, 13, 14, 15, 30, 17, 36, 19, 30, 21, 22, 23, 60, 30, 26, 39, 42, 29, 30, 31, 62, 33, 34, 35, 96, 37, 38, 39, 70, 41, 42, 43, 66, 60, 46, 47, 144, 56, 120, 51, 78, 53, 198, 55, 98, 57, 58, 59, 90, 61, 62, 84, 126, 65, 66]

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

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