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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.

A163751 a(n) = n-th even nonprime minus n-th nonprime.

Table of values

n a(n)
1 0
2 3
3 2
4 2
5 2
6 3
7 4
8 4
9 4
10 5
11 6
12 6
13 6
14 7
15 8
16 8
17 9
18 10
19 11
20 12
21 12
22 12
23 13
24 14
25 15
26 16
27 16
28 17
29 18
30 18
31 18
32 19
33 20
34 20
35 21
36 22
37 23
38 24
39 24
40 25
41 26
42 27
43 28
44 28
45 28
46 29
47 30
48 31
49 32
50 32
51 33
52 34
53 34
54 34
55 35
56 36
57 37
58 38
59 38
60 39
61 40
62 40
63 41
64 42
65 43
66 44
67 44
68 45
69 46
70 47
71 48
72 49
73 50
74 50
75 51

List of values

[0, 3, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 9, 10, 11, 12, 12, 12, 13, 14, 15, 16, 16, 17, 18, 18, 18, 19, 20, 20, 21, 22, 23, 24, 24, 25, 26, 27, 28, 28, 28, 29, 30, 31, 32, 32, 33, 34, 34, 34, 35, 36, 37, 38, 38, 39, 40, 40, 41, 42, 43, 44, 44, 45, 46, 47, 48, 49, 50, 50, 51]

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

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