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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.

A304439 Add to n the sum of its odd digits minus the sum of its even digits.

Table of values

n a(n)
0 0
1 2
2 0
3 6
4 0
5 10
6 0
7 14
8 0
9 18
10 11
11 13
12 11
13 17
14 11
15 21
16 11
17 25
18 11
19 29
20 18
21 20
22 18
23 24
24 18
25 28
26 18
27 32
28 18
29 36
30 33
31 35
32 33
33 39
34 33
35 43
36 33
37 47
38 33
39 51
40 36
41 38
42 36
43 42
44 36
45 46
46 36
47 50
48 36
49 54
50 55
51 57
52 55
53 61
54 55
55 65
56 55
57 69
58 55
59 73
60 54
61 56
62 54
63 60
64 54
65 64
66 54
67 68
68 54
69 72

List of values

[0, 2, 0, 6, 0, 10, 0, 14, 0, 18, 11, 13, 11, 17, 11, 21, 11, 25, 11, 29, 18, 20, 18, 24, 18, 28, 18, 32, 18, 36, 33, 35, 33, 39, 33, 43, 33, 47, 33, 51, 36, 38, 36, 42, 36, 46, 36, 50, 36, 54, 55, 57, 55, 61, 55, 65, 55, 69, 55, 73, 54, 56, 54, 60, 54, 64, 54, 68, 54, 72]

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

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