356515840domain: NAppears in sequencesa(n) = -2*a(n-1) + 4*a(n-3), with a(0) = 1, a(1) = a(2) = 0.at n=32A099212Values of A007692(n) that are not of the form x^2 + y^2 + z^2 where x, y, z are nonzero integers.at n=22A273123