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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.

A099188 a(n) = 2*ceiling(n/sqrt(2)).

Table of values

n a(n)
0 0
1 2
2 4
3 6
4 6
5 8
6 10
7 10
8 12
9 14
10 16
11 16
12 18
13 20
14 20
15 22
16 24
17 26
18 26
19 28
20 30
21 30
22 32
23 34
24 34
25 36
26 38
27 40
28 40
29 42
30 44
31 44
32 46
33 48
34 50
35 50
36 52
37 54
38 54
39 56
40 58
41 58
42 60
43 62
44 64
45 64
46 66
47 68
48 68
49 70
50 72
51 74
52 74
53 76
54 78
55 78
56 80
57 82
58 84
59 84
60 86
61 88
62 88
63 90
64 92
65 92
66 94
67 96
68 98
69 98
70 100

List of values

[0, 2, 4, 6, 6, 8, 10, 10, 12, 14, 16, 16, 18, 20, 20, 22, 24, 26, 26, 28, 30, 30, 32, 34, 34, 36, 38, 40, 40, 42, 44, 44, 46, 48, 50, 50, 52, 54, 54, 56, 58, 58, 60, 62, 64, 64, 66, 68, 68, 70, 72, 74, 74, 76, 78, 78, 80, 82, 84, 84, 86, 88, 88, 90, 92, 92, 94, 96, 98, 98, 100]

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

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