Question

. All consecutive odd positive integers have been written out in a spiral, as shown
in the picture. The diagonal that contains numbers 3 and 15 has been painted
gray. Let us call all the numbers that belong to it good. Suppose we arrange all
the good numbers in ascending order: 3, 15, 23, 43... Find the 2020th number
in this sequence.

Answer 1

Answer:

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