Any better Fibonacci series generator using pure Oracle SQL?

Question

I wonder if there is any way to generate Fibonacci numbers that beat in simplicity and efficiency this one I wrote:

WITH d (seq) AS
       (SELECT     LEVEL
         


        

Answer 1

on the simplicity side of things, the query can rely on the built in features (ITERATE () and ITERATION_NUMBER) of MODEL:

select * from dual
model
  dimension by (0 seq)
  measures (0 val)
  rules iterate (195) 
  (
     val[iteration_number] = val[iteration_number-1] + val[iteration_number-2],
     val[2] = 1, 
     val[1] = 0, 
     val[0] = 0
  )
;