int local fn F( n as int, x as int, y as int )
  if ( n == 0 ) then return x + y
  if ( y == 0 ) then return x
end fn = fn F( n-1, fn F( n, x, y-1 ), fn F( n, x, y-1 ) + y )

printf @"F(1,3,3) = %d",fn F(1,3,3)

HandleEvents