Pisot sequence E(3,11), a(n) = floor(a(n-1)^2/a(n-2) + 1/2).

Terms

a(0) =3a(1) =11a(2) =40a(3) =145a(4) =526a(5) =1908a(6) =6921a(7) =25105a(8) =91065a(9) =330326a(10) =1198213a(11) =4346356a(12) =15765820a(13) =57188385a(14) =207443151a(15) =752472043a(16) =2729490816a(17) =9900859685a(18) =35914032730a(19) =130273308376a(20) =472548850273