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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.

A078400 Iterated sum-of-digits of A078403(n).

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 2
6 5
7 2
8 5
9 7
10 2
11 5
12 7
13 7
14 2
15 7
16 2
17 5
18 5
19 2
20 5
21 7
22 5
23 2
24 2
25 7
26 2
27 5
28 7
29 5
30 2
31 7
32 2
33 5
34 5
35 7
36 2
37 7
38 5
39 7
40 2
41 7
42 5
43 2
44 5
45 5
46 7
47 7
48 2
49 7
50 2
51 2
52 5
53 5
54 7
55 5
56 2
57 2
58 5
59 7
60 5
61 7
62 2
63 5
64 2
65 7
66 2
67 7
68 7
69 7
70 5
71 5
72 5
73 2
74 2
75 7
76 2
77 5
78 7
79 2
80 2
81 5
82 2
83 5
84 2
85 7
86 5
87 2
88 5
89 7
90 5
91 7
92 7
93 7
94 2
95 5
96 2
97 7
98 2
99 2
100 5
101 7
102 2
103 5
104 7
105 7

List of values

[2, 3, 5, 7, 2, 5, 2, 5, 7, 2, 5, 7, 7, 2, 7, 2, 5, 5, 2, 5, 7, 5, 2, 2, 7, 2, 5, 7, 5, 2, 7, 2, 5, 5, 7, 2, 7, 5, 7, 2, 7, 5, 2, 5, 5, 7, 7, 2, 7, 2, 2, 5, 5, 7, 5, 2, 2, 5, 7, 5, 7, 2, 5, 2, 7, 2, 7, 7, 7, 5, 5, 5, 2, 2, 7, 2, 5, 7, 2, 2, 5, 2, 5, 2, 7, 5, 2, 5, 7, 5, 7, 7, 7, 2, 5, 2, 7, 2, 2, 5, 7, 2, 5, 7, 7]

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