def triangle( height ) =
  width = max( map(a -> a.toString().length(), pascal(height)) )

  if 2|width
    width++

  for n <- 1..height
    print( ' '*((width + 1)\2)*(height - n) )
    println( map(a -> format('%' + width + 'd ', a), pascal(n)).mkString() )

triangle( 10 )