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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.

A107128 Divide the even digits of n by 2!.

Table of values

n a(n)
0 0
1 1
2 1
3 3
4 2
5 5
6 3
7 7
8 4
9 9
10 10
11 11
12 11
13 13
14 12
15 15
16 13
17 17
18 14
19 19
20 10
21 11
22 11
23 13
24 12
25 15
26 13
27 17
28 14
29 19
30 30
31 31
32 31
33 33
34 32
35 35
36 33
37 37
38 34
39 39
40 20
41 21
42 21
43 23
44 22
45 25
46 23
47 27
48 24
49 29
50 50
51 51
52 51
53 53
54 52
55 55
56 53
57 57
58 54
59 59
60 30
61 31
62 31
63 33
64 32
65 35
66 33
67 37
68 34
69 39
70 70
71 71
72 71

List of values

[0, 1, 1, 3, 2, 5, 3, 7, 4, 9, 10, 11, 11, 13, 12, 15, 13, 17, 14, 19, 10, 11, 11, 13, 12, 15, 13, 17, 14, 19, 30, 31, 31, 33, 32, 35, 33, 37, 34, 39, 20, 21, 21, 23, 22, 25, 23, 27, 24, 29, 50, 51, 51, 53, 52, 55, 53, 57, 54, 59, 30, 31, 31, 33, 32, 35, 33, 37, 34, 39, 70, 71, 71]

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