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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.

A329623 The absolute value of the difference between n and A053392(n), the concatenation of the sums of every pair of consecutive digits of n.

Table of values

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

List of values

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 63]

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

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