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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.

A070440 a(n) = n^2 mod 18.

Table of values

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

List of values

[0, 1, 4, 9, 16, 7, 0, 13, 10, 9, 10, 13, 0, 7, 16, 9, 4, 1, 0, 1, 4, 9, 16, 7, 0, 13, 10, 9, 10, 13, 0, 7, 16, 9, 4, 1, 0, 1, 4, 9, 16, 7, 0, 13, 10, 9, 10, 13, 0, 7, 16, 9, 4, 1, 0, 1, 4, 9, 16, 7, 0, 13, 10, 9, 10, 13, 0, 7, 16, 9, 4, 1, 0, 1, 4, 9, 16, 7, 0, 13, 10, 9, 10, 13, 0, 7, 16, 9]

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