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.

A386562 Irregular table read by rows: Place a point on the integer coordinates, up to |n|, along all four axial directions on a Cartesian plane, and then join an infinite straight line between every pair of points: T(n,k) is the number of k-sided finite polygons formed, for k>=3, in the resulting graph.

Table of values

n a(n)
1 4
2 44
3 24
4 4
5 184
6 216
7 24
8 560
9 780
10 56
11 1456
12 1844
13 224
14 12
15 3100
16 3788
17 376
18 24
19 4
20 5860
21 7100
22 1148
23 156
24 8
25 9860
26 12436
27 1848
28 164
29 20
30 4
31 16044
32 19732
33 3100
34 460
35 16
36 4
37 24744
38 29568
39 5048
40 516
41 32
42 12
43 36780
44 43472
45 9608
46 1400
47 68
48 20
49 52296
50 61244
51 12628
52 1784
53 116
54 16

List of values

[4, 44, 24, 4, 184, 216, 24, 560, 780, 56, 1456, 1844, 224, 12, 3100, 3788, 376, 24, 4, 5860, 7100, 1148, 156, 8, 9860, 12436, 1848, 164, 20, 4, 16044, 19732, 3100, 460, 16, 4, 24744, 29568, 5048, 516, 32, 12, 36780, 43472, 9608, 1400, 68, 20, 52296, 61244, 12628, 1784, 116, 16]

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

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