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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.

A070433 a(n) = n^2 mod 9.

Table of values

n a(n)
0 0
1 1
2 4
3 0
4 7
5 7
6 0
7 4
8 1
9 0
10 1
11 4
12 0
13 7
14 7
15 0
16 4
17 1
18 0
19 1
20 4
21 0
22 7
23 7
24 0
25 4
26 1
27 0
28 1
29 4
30 0
31 7
32 7
33 0
34 4
35 1
36 0
37 1
38 4
39 0
40 7
41 7
42 0
43 4
44 1
45 0
46 1
47 4
48 0
49 7
50 7
51 0
52 4
53 1
54 0
55 1
56 4
57 0
58 7
59 7
60 0
61 4
62 1
63 0
64 1
65 4
66 0
67 7
68 7
69 0
70 4
71 1
72 0
73 1
74 4
75 0
76 7
77 7
78 0
79 4
80 1
81 0
82 1
83 4
84 0
85 7
86 7
87 0
88 4
89 1
90 0
91 1
92 4
93 0
94 7
95 7
96 0
97 4
98 1
99 0
100 1

List of values

[0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1, 4, 0, 7, 7, 0, 4, 1, 0, 1]

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