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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.

A240445 Numbers of ways to place five indistinguishable points on an n X n square grid so that no four of them are vertices of a square of any orientation.

Table of values

n a(n)
3 96
4 4128
5 52080
6 373632
7 1898064
8 7604352
9 25580016
10 75208320
11 198651024
12 480768288
13 1081848768
14 2289041664
15 4594218720
16 8808178176
17 16223664672
18 28842649344
19 49686723072
20 83213333280
21 135864971088
22 216783321216
23 338725852080
24 519228378240
25 782063802000

List of values

[96, 4128, 52080, 373632, 1898064, 7604352, 25580016, 75208320, 198651024, 480768288, 1081848768, 2289041664, 4594218720, 8808178176, 16223664672, 28842649344, 49686723072, 83213333280, 135864971088, 216783321216, 338725852080, 519228378240, 782063802000]

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

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