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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.

A366839 Sum of even prime factors of 2n, counted with multiplicity.

Table of values

n a(n)
1 2
2 4
3 2
4 6
5 2
6 4
7 2
8 8
9 2
10 4
11 2
12 6
13 2
14 4
15 2
16 10
17 2
18 4
19 2
20 6
21 2
22 4
23 2
24 8
25 2
26 4
27 2
28 6
29 2
30 4
31 2
32 12
33 2
34 4
35 2
36 6
37 2
38 4
39 2
40 8
41 2
42 4
43 2
44 6
45 2
46 4
47 2
48 10
49 2
50 4
51 2
52 6
53 2
54 4
55 2
56 8
57 2
58 4
59 2
60 6
61 2
62 4
63 2
64 14
65 2
66 4
67 2
68 6
69 2
70 4
71 2
72 8
73 2
74 4
75 2
76 6
77 2
78 4
79 2
80 10
81 2
82 4
83 2
84 6
85 2

List of values

[2, 4, 2, 6, 2, 4, 2, 8, 2, 4, 2, 6, 2, 4, 2, 10, 2, 4, 2, 6, 2, 4, 2, 8, 2, 4, 2, 6, 2, 4, 2, 12, 2, 4, 2, 6, 2, 4, 2, 8, 2, 4, 2, 6, 2, 4, 2, 10, 2, 4, 2, 6, 2, 4, 2, 8, 2, 4, 2, 6, 2, 4, 2, 14, 2, 4, 2, 6, 2, 4, 2, 8, 2, 4, 2, 6, 2, 4, 2, 10, 2, 4, 2, 6, 2]

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