A number is a perfect square, or a square number, if it is the square of a positive integer.

For example,

is a square number because

; it is also an odd square.

The first 5 square numbers are:

, and the sum of the odd squares is

.

Among the first 953 thousand square numbers, what is the sum of all the odd squares?

asked by guest
on Oct 07, 2025 at 9:36 am



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