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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.

A211026 Number of segments needed to draw (on the infinite square grid) a diagram of regions and partitions of n.

Table of values

n a(n)
1 4
2 6
3 8
4 12
5 16
6 24
7 32
8 46
9 62
10 86
11 114
12 156
13 204
14 272
15 354
16 464
17 596
18 772
19 982
20 1256
21 1586
22 2006
23 2512
24 3152
25 3918
26 4874
27 6022
28 7438
29 9132
30 11210
31 13686
32 16700
33 20288
34 24622
35 29768
36 35956
37 43276
38 52032
39 62372
40 74678
41 89168
42 106350

List of values

[4, 6, 8, 12, 16, 24, 32, 46, 62, 86, 114, 156, 204, 272, 354, 464, 596, 772, 982, 1256, 1586, 2006, 2512, 3152, 3918, 4874, 6022, 7438, 9132, 11210, 13686, 16700, 20288, 24622, 29768, 35956, 43276, 52032, 62372, 74678, 89168, 106350]

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

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