**Minimal number of quadratic residues: a(n) is the least integer m such that any non-zero square is congruent (mod n) to one of the squares from 1 to m^2.**

*1, 1, 1, 2, 3, 3, 2, 4, 5, 5, 3, 6, 7, 6, 3, 8, 8, 9, 5, 9, 11, 11, 6, 12, 13, 13, 7, 14, 15, 15*

*5 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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