Floyd's triangle   lists the natural numbers in a right triangle aligned to the left where

 the first row is   1     (unity)
 successive rows start towards the left with the next number followed by successive naturals listing one more number than the line above.


The first few lines of a Floyd triangle looks like this:

 1
 2  3
 4  5  6
 7  8  9 10
11 12 13 14 15



Task

 Write a program to generate and display here the first   n   lines of a Floyd triangle. 
(Use   n=5   and   n=14   rows).
 Ensure that when displayed in a mono-space font, the numbers line up in vertical columns as shown and that only one space separates numbers of the last row.


import "/fmt" for Fmt
 
var floyd = Fn.new { |n|
   var k = 1
   for (i in 1..n) {
       for (j in 1..i) {
           Fmt.write("$*d ", (j < 9) ? 2 : 3, k)
           k = k + 1
       }
       System.print()
   }
}
 
System.print("Floyd(5):")
floyd.call(5)
System.print("\nFloyd(14):")
floyd.call(14)