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.

A332607 Number of quadrilaterals in the graph formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares).

Table of values

n a(n)
1 2
2 8
3 36
4 92
5 194
6 336
7 554
8 812
9 1314
10 1756
11 2508
12 3252
13 4348
14 5464
15 7054
16 8760
17 11050
18 13324
19 16162
20 19256
21 23188
22 27120
23 32098
24 37396
25 43456
26 49516
27 57608
28 65440
29 74670
30 84388
31 95674
32 107656
33 120990
34 133996
35 150144
36 166424
37 185090
38 203960
39 224926
40 247120

List of values

[2, 8, 36, 92, 194, 336, 554, 812, 1314, 1756, 2508, 3252, 4348, 5464, 7054, 8760, 11050, 13324, 16162, 19256, 23188, 27120, 32098, 37396, 43456, 49516, 57608, 65440, 74670, 84388, 95674, 107656, 120990, 133996, 150144, 166424, 185090, 203960, 224926, 247120]