Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic residues mod p.

Terms

a(0) =1a(1) =22a(2) =76a(3) =430a(4) =767a(5) =1072a(6) =1577a(7) =2675a(8) =3930a(9) =4587a(10) =6520a(11) =7518a(12) =10761a(13) =12258a(14) =14809a(15) =19527a(16) =23025a(17) =26811a(18) =29148a(19) =35247a(20) =41900a(21) =47844a(22) =52771a(23) =57938a(24) =61377a(25) =66944a(26) =73845a(27) =76568a(28) =79940a(29) =83941