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Table of n, a(n) for n=1..28.
(Sage) [quadratic_residues(78)] # Zerinvary Lajos, May 28 2009
Sequence in context: A283973 A276672 A010400 * A005836 A054591 A121153
Adjacent sequences: A010436 A010437 A010438 * A010440 A010441 A010442
N. J. A. Sloane