Claims

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1972_03_01_erdos: Erdős proves that every integer between an absolute constant times n^{3/2} and n choose 2, except two values, is the number of lines of some n points in the plane; refereed, and credited by the site.

1988_06_01_salamon_erdos: Salamon and Erdős determine, for every sufficiently large n, exactly which integers occur as the number of lines determined by n points in the plane, the corrected Statement of Problem 606 in full; refereed, and credited by the site as the solution.

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