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A
magic square is a square arrangement of numbers in which each row, column and diagonal adds up to the same value (called the
magic constant). Usually, the magic square has the numbers
to
(such squares are called
normal). One of the best known magic squares has
and magic constant
:
Magic constant
The
magic constant of an
magic square with numbers
to
is
- (A006003)
where
is the
k-th
triangular number.
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