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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.

A375416 Number of order n magic triangles composed of the numbers from 1 to n^2 in which the sum of each 2 X 2 subtriangle is the same, counted up to rotations and reflections.

Table of values

n a(n)
1 1
2 4
3 144
4 38336
5 539904
6 87249024

List of values

[1, 4, 144, 38336, 539904, 87249024]

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

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