cp's OEIS Frontend

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.

A160943 a(n) = n + digital sum(n-1) + digital sum(n+1).

Table of values

n a(n)
1 3
2 6
3 9
4 12
5 15
6 18
7 21
8 24
9 18
10 21
11 15
12 18
13 21
14 24
15 27
16 30
17 33
18 36
19 30
20 33
21 27
22 30
23 33
24 36
25 39
26 42
27 45
28 48
29 42
30 45
31 39
32 42
33 45
34 48
35 51
36 54
37 57
38 60
39 54
40 57
41 51
42 54
43 57
44 60
45 63
46 66
47 69
48 72
49 66
50 69
51 63
52 66
53 69
54 72
55 75
56 78
57 81
58 84
59 78
60 81
61 75
62 78
63 81
64 84
65 87
66 90
67 93
68 96
69 90
70 93

List of values

[3, 6, 9, 12, 15, 18, 21, 24, 18, 21, 15, 18, 21, 24, 27, 30, 33, 36, 30, 33, 27, 30, 33, 36, 39, 42, 45, 48, 42, 45, 39, 42, 45, 48, 51, 54, 57, 60, 54, 57, 51, 54, 57, 60, 63, 66, 69, 72, 66, 69, 63, 66, 69, 72, 75, 78, 81, 84, 78, 81, 75, 78, 81, 84, 87, 90, 93, 96, 90, 93]

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

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