Pisot sequence E(9,19), a(n)=[ a(n-1)^2/a(n-2)+1/2 ].

Terms

a(0) =9a(1) =19a(2) =40a(3) =84a(4) =176a(5) =369a(6) =774a(7) =1624a(8) =3407a(9) =7148a(10) =14997a(11) =31465a(12) =66016a(13) =138507a(14) =290599a(15) =609700a(16) =1279199a(17) =2683861a(18) =5630953a(19) =11814185a(20) =24787095a(21) =52005287a(22) =109111208a(23) =228923950a(24) =480300565a(25) =1007708598a(26) =2114252392a(27) =4435868847a(28) =9306803910a(29) =19526411174