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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.

A333909 Numbers k such that phi(k) is the sum of 2 squares, where phi is the Euler totient function (A000010).

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 8
8 10
9 11
10 12
11 15
12 16
13 17
14 19
15 20
16 22
17 24
18 25
19 27
20 30
21 32
22 33
23 34
24 37
25 38
26 40
27 41
28 44
29 48
30 50
31 51
32 53
33 54
34 55
35 57
36 59
37 60
38 63
39 64
40 66
41 68
42 73
43 74
44 75
45 76
46 80
47 82
48 83
49 85
50 88
51 91
52 95
53 96
54 100
55 101
56 102
57 106
58 107
59 108
60 110
61 111
62 114
63 117
64 118
65 120

List of values

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 19, 20, 22, 24, 25, 27, 30, 32, 33, 34, 37, 38, 40, 41, 44, 48, 50, 51, 53, 54, 55, 57, 59, 60, 63, 64, 66, 68, 73, 74, 75, 76, 80, 82, 83, 85, 88, 91, 95, 96, 100, 101, 102, 106, 107, 108, 110, 111, 114, 117, 118, 120]

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

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