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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.

A240924 Digital root of squares of numbers not divisible by 2, 3 or 5.

Table of values

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

List of values

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

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

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