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.
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.
Terms
- a(0) =1a(1) =4a(2) =144a(3) =38336a(4) =539904a(5) =87249024
External references
- oeis: A375416