### Calculating the class number h(-d) for imaginary quadratic fields Q(√d)

h(-d) is listed for all squarefree d in the range m ≤ d ≤ n, where n < 10^{6}.

We count equivalently h(-D) for positive definite binary quadratic forms of negative discriminant -D, where

(See Henri Cohen's Algorithm 5.3.5, p. 228, *A course in computational number theory*, First Edition.)

*Last modified 18th January 2011*

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