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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.

A261010 Write 5^n in base 3, add up the "digits".

Table of values

n a(n)
0 1
1 3
2 5
3 7
4 7
5 9
6 9
7 13
8 15
9 13
10 13
11 17
12 19
13 21
14 21
15 27
16 25
17 25
18 25
19 23
20 27
21 33
22 31
23 39
24 35
25 45
26 37
27 57
28 45
29 47
30 45
31 45
32 53
33 47
34 55
35 51
36 57
37 59
38 67
39 67
40 69
41 65
42 67
43 65
44 71
45 79
46 71
47 65
48 67
49 75
50 65
51 71
52 73
53 83
54 69
55 79
56 81
57 85
58 79
59 89
60 87
61 95
62 89
63 85
64 97
65 99
66 93
67 101
68 107

List of values

[1, 3, 5, 7, 7, 9, 9, 13, 15, 13, 13, 17, 19, 21, 21, 27, 25, 25, 25, 23, 27, 33, 31, 39, 35, 45, 37, 57, 45, 47, 45, 45, 53, 47, 55, 51, 57, 59, 67, 67, 69, 65, 67, 65, 71, 79, 71, 65, 67, 75, 65, 71, 73, 83, 69, 79, 81, 85, 79, 89, 87, 95, 89, 85, 97, 99, 93, 101, 107]

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

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