Let D = A042948(n) be the n-th positive integer congruent to 0 or 1 mod 4, then a(n) = b(D) := Sum_{i=1..D} Kronecker(D,i)*i^2, where Kronecker(D,i) is the Kronecker symbol.

A329649

Let D = A042948(n) be the n-th positive integer congruent to 0 or 1 mod 4, then a(n) = b(D) := Sum_{i=1..D} Kronecker(D,i)*i^2, where Kronecker(D,i) is the Kronecker symbol.