a(n+1) = a(n)^2 - a(n)*a(n-1) + a(n-1)^2.A000317a(n+1) = a(n)^2 - a(n)*a(n-1) + a(n-1)^2.Terms a(0) =1a(1) =2a(2) =3a(3) =7a(4) =37a(5) =1159a(6) =1301767External referencesoeis: A000317