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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.

A286526 Number of inequivalent n X n matrices over GF(5) under action of dihedral group of the square D_4, with a fifth of 1's, 2's, 3's, 4's and 5's (ordered occurrences rounded up/down if n^2 != 0 mod 5).

Table of values

n a(n)
0 1
1 1
2 1
3 2874
4 84086160
5 77920099694640
6 1787320731699689472000
7 1208369393947533515948886636000
8 22022604563875220592723146462014970246400
9 10631042739086498005729294276105510004209560426195000
10 136864426940639977623403211038729959780835360788855628470904385280

List of values

[1, 1, 1, 2874, 84086160, 77920099694640, 1787320731699689472000, 1208369393947533515948886636000, 22022604563875220592723146462014970246400, 10631042739086498005729294276105510004209560426195000, 136864426940639977623403211038729959780835360788855628470904385280]

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

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