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 A282726 Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic nonresidues mod p . 2
 2, 33, 95, 473, 944, 1139, 1826, 2996, 4585, 5004, 6683, 8413, 11394, 13393, 16566, 20376, 23946, 27804, 30883, 36384, 45671, 50059, 56040, 62357, 62874, 69559, 75486, 81635, 82795, 88050, 97183, 104166, 112030, 118159, 120925, 138193, 156613, 167066, 173670, 187262, 196026, 206796, 226333, 242750 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..2500 Aebi, Christian, and Grant Cairns. Sums of Quadratic residues and nonresidues, arXiv preprint arXiv:1512.00896 (2015). MAPLE with(numtheory): Ql:=[]; Qu:=[]; Q:=[]; Nl:=[]; Nu:=[]; N:=[]; Th:=[]; for i1 from 1 to 300 do p:=ithprime(i1); if (p mod 8) = 3 then ql:=0; qu:=0; q:=0; nl:=0; nu:=0; n:=0; for j from 1 to p-1 do if legendre(j, p)=1 then q:=q+j; if j

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Last modified June 21 16:23 EDT 2021. Contains 345365 sequences. (Running on oeis4.)