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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.

A027709 Minimal perimeter of polyomino with n square cells.

Table of values

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

List of values

[0, 4, 6, 8, 8, 10, 10, 12, 12, 12, 14, 14, 14, 16, 16, 16, 16, 18, 18, 18, 18, 20, 20, 20, 20, 20, 22, 22, 22, 22, 22, 24, 24, 24, 24, 24, 24, 26, 26, 26, 26, 26, 26, 28, 28, 28, 28, 28, 28, 28, 30, 30, 30, 30, 30, 30, 30, 32, 32, 32, 32, 32, 32, 32, 32, 34, 34, 34, 34, 34, 34]

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

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