cp's OEIS Frontend

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.

A067151 Number of regions in regular n-gon which are quadrilaterals (4-gons) when all its diagonals are drawn.

Table of values

n a(n)
4 0
5 0
6 6
7 7
8 24
9 36
10 90
11 132
12 168
13 234
14 378
15 600
16 672
17 901
18 954
19 1444
20 1580
21 2520
22 2860
23 2990
24 3696
25 4800
26 5070
27 6750
28 7644
29 9309
30 7920
31 12927
32 12896
33 15576
34 16898
35 20475
36 18684
37 25382
38 27246
39 30966
40 32760
41 37064
42 37170
43 45838
44 47300
45 55350
46 60996
47 69231
48 66864
49 80507
50 87550
51 98124
52 103272

List of values

[0, 0, 6, 7, 24, 36, 90, 132, 168, 234, 378, 600, 672, 901, 954, 1444, 1580, 2520, 2860, 2990, 3696, 4800, 5070, 6750, 7644, 9309, 7920, 12927, 12896, 15576, 16898, 20475, 18684, 25382, 27246, 30966, 32760, 37064, 37170, 45838, 47300, 55350, 60996, 69231, 66864, 80507, 87550, 98124, 103272]

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

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