a(n) = floor(sqrt(Fibonacci(n+1)*Fibonacci(n))).

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =10a(7) =16a(8) =26a(9) =43a(10) =69a(11) =113a(12) =183a(13) =296a(14) =479a(15) =775a(16) =1255a(17) =2031a(18) =3286a(19) =5318a(20) =8605a(21) =13923a(22) =22528a(23) =36452a(24) =58981a(25) =95433a(26) =154414a(27) =249847a(28) =404261a(29) =654109