a(0)=1; a(1)=1; a(n)= a(n-1) + floor( sqrt(a(n-1)*a(n-2))+ sqrt(a(n-3)*a(n-4))+ ... ).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =11a(6) =22a(7) =43a(8) =85a(9) =166a(10) =327a(11) =641a(12) =1259a(13) =2471a(14) =4853a(15) =9528a(16) =18710a(17) =36737a(18) =72137a(19) =141643a(20) =278125a(21) =546112a(22) =1072322a(23) =2105559a(24) =4134379a(25) =8118070a(26) =15940263a(27) =31299549a(28) =61458328a(29) =120676683