The constant is 34.
Magic squares have been a source of intrigue since the time of Pythagoras, and even before. You will find the following link useful.
MAGIC SQUARE is a square divided into equal squares, like a chess board, where in each individual square is placed one of a series of consecutive numbers from 1 up to the square of the number of cells in a side, in such a manner that the sum of the numbers in each row or column and in each diagonal is constant.
if the magic square is magic then it is found inside bananas.
No middle name.
His self-portrait.
3x3 magic square 25 total
Just take any magic square, and multiply every number by 5. Here you will get another magic square with all numbers multiples of 5.
Think! What if the magic square had an even number of cells. There's your answer.
A 1-9 magic square must add to 15.
Albrecht Dürer drew a 'magic square' in his engraving 'Melencolia I'. But I do not think he invented it.
A normal 3x3 magic square has a sum of 15. So you subtract 3 from each number in the square.
jack