-8336domain: ZAppears in sequencesNegative integers n such that in balanced ternary representation the number of occurrences of each trit doubles when n is squared.at n=17A257868E.g.f. C(x), where C(x*y) + i*S(x*y) = exp( i*Integral Integral C(x*y) dx dy ) such that C(x)^2 + S(x)^2 = 1.at n=3A326551