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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.

A271324 a(n) = n + floor(n/4) + (n mod 4).

Table of values

n a(n)
0 0
1 2
2 4
3 6
4 5
5 7
6 9
7 11
8 10
9 12
10 14
11 16
12 15
13 17
14 19
15 21
16 20
17 22
18 24
19 26
20 25
21 27
22 29
23 31
24 30
25 32
26 34
27 36
28 35
29 37
30 39
31 41
32 40
33 42
34 44
35 46
36 45
37 47
38 49
39 51
40 50
41 52
42 54
43 56
44 55
45 57
46 59
47 61
48 60
49 62
50 64
51 66
52 65
53 67
54 69
55 71
56 70
57 72
58 74
59 76
60 75
61 77
62 79
63 81
64 80
65 82
66 84
67 86
68 85
69 87
70 89

List of values

[0, 2, 4, 6, 5, 7, 9, 11, 10, 12, 14, 16, 15, 17, 19, 21, 20, 22, 24, 26, 25, 27, 29, 31, 30, 32, 34, 36, 35, 37, 39, 41, 40, 42, 44, 46, 45, 47, 49, 51, 50, 52, 54, 56, 55, 57, 59, 61, 60, 62, 64, 66, 65, 67, 69, 71, 70, 72, 74, 76, 75, 77, 79, 81, 80, 82, 84, 86, 85, 87, 89]

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

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