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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.

A347751 Number of finite edges in the graph formed when every pair of vertices of a row of n adjacent congruent rectangles are joined by an infinite line.

Table of values

n a(n)
0 0
1 8
2 36
3 124
4 300
5 664
6 1200
7 2108
8 3388
9 5232
10 7568
11 10852
12 14892
13 20288
14 26704
15 34540
16 43812
17 55400
18 68584
19 84684
20 103004
21 124216
22 147888
23 175820
24 206788
25 242424
26 281560
27 325708
28 374148
29 429416
30 489000
31 556412
32 629804
33 710536
34 797280
35 892564
36 994588
37 1107744
38 1228432
39 1359292
40 1498788

List of values

[0, 8, 36, 124, 300, 664, 1200, 2108, 3388, 5232, 7568, 10852, 14892, 20288, 26704, 34540, 43812, 55400, 68584, 84684, 103004, 124216, 147888, 175820, 206788, 242424, 281560, 325708, 374148, 429416, 489000, 556412, 629804, 710536, 797280, 892564, 994588, 1107744, 1228432, 1359292, 1498788]

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

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