a(n) = 2^(n^2) - 3^n.A120773a(n) = 2^(n^2) - 3^n.Terms a(0) =0a(1) =-1a(2) =7a(3) =485a(4) =65455a(5) =33554189a(6) =68719476007External referencesoeis: A120773