"Fibonacci numbers function
fib(n) = if(n ≡ 1; 1; 
  $block{
    a = 0; 
    b = 1; 
    $repeat{
       c = a + b; 
       a = b; 
       b = c; 
     @ k = 1 : n - 1} _
  } _
)
'Results
#for i = 1 : 9
	fib(i)
#loop