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.

A228578 Sum of the distinct prime factors of the squarefree semiprimes (A006881).

Table of values

n a(n)
1 5
2 7
3 9
4 8
5 10
6 13
7 15
8 14
9 19
10 12
11 21
12 16
13 25
14 20
15 16
16 22
17 31
18 33
19 18
20 26
21 39
22 18
23 43
24 22
25 45
26 32
27 20
28 34
29 49
30 24
31 55
32 40
33 28
34 61
35 24
36 63
37 44
38 46
39 26
40 69
41 50
42 73
43 24
44 34
45 75
46 36
47 81
48 56
49 30
50 85
51 62
52 91
53 64
54 42
55 28
56 99
57 70
58 103
59 36
60 46
61 105
62 30
63 74
64 109
65 48
66 38
67 111

List of values

[5, 7, 9, 8, 10, 13, 15, 14, 19, 12, 21, 16, 25, 20, 16, 22, 31, 33, 18, 26, 39, 18, 43, 22, 45, 32, 20, 34, 49, 24, 55, 40, 28, 61, 24, 63, 44, 46, 26, 69, 50, 73, 24, 34, 75, 36, 81, 56, 30, 85, 62, 91, 64, 42, 28, 99, 70, 103, 36, 46, 105, 30, 74, 109, 48, 38, 111]

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

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