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.

A254340 Sum of the distinct prime factors of n plus n+1: a(n) = A008472(n) + n + 1.

Table of values

n a(n)
1 2
2 5
3 7
4 7
5 11
6 12
7 15
8 11
9 13
10 18
11 23
12 18
13 27
14 24
15 24
16 19
17 35
18 24
19 39
20 28
21 32
22 36
23 47
24 30
25 31
26 42
27 31
28 38
29 59
30 41
31 63
32 35
33 48
34 54
35 48
36 42
37 75
38 60
39 56
40 48
41 83
42 55
43 87
44 58
45 54
46 72
47 95
48 54
49 57
50 58
51 72
52 68
53 107
54 60
55 72
56 66
57 80
58 90
59 119
60 71
61 123
62 96
63 74
64 67
65 84

List of values

[2, 5, 7, 7, 11, 12, 15, 11, 13, 18, 23, 18, 27, 24, 24, 19, 35, 24, 39, 28, 32, 36, 47, 30, 31, 42, 31, 38, 59, 41, 63, 35, 48, 54, 48, 42, 75, 60, 56, 48, 83, 55, 87, 58, 54, 72, 95, 54, 57, 58, 72, 68, 107, 60, 72, 66, 80, 90, 119, 71, 123, 96, 74, 67, 84]

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

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