

A241079


If n is a perfect square, a(n) = 0. If n is not a perfect square, a(n) = number of final digits necessary to rule out n as a perfect square, or 1 if cannot be ruled out as a perfect square using any group of final digits.


0



0, 1, 1, 0, 2, 2, 1, 1, 0, 2, 2, 1, 1, 2, 2, 0, 1, 1, 2, 2, 3, 2, 2, 4, 0, 2, 1, 1, 3, 2, 2, 1, 1, 2, 2, 0, 1, 1, 2, 2, 1, 1, 1, 4, 2, 2, 1, 1, 0, 2, 2, 1, 1, 2, 2, 4, 1, 1, 2, 2, 3, 1, 1, 0, 2, 2, 1, 1, 3, 2, 2, 1, 1, 2, 2
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