Assignment #76 and Collatz Sequence

Code

    /// Name: Ali Kurland
    /// Period: 6
    /// Program Name: Collatz Sequence
    /// File Name: CollatzSequence.java
    /// Date Finished: 10/20/2015
    
    import java.util.Scanner;
    
    public class CollatzSequence
    {
        public static void main( String[] args )
        {
            Scanner keyboard = new Scanner(System.in);
            int n, steps;
            steps = 0;
            
            System.out.print( "Starting number: " );
            n = keyboard.nextInt();
            
            if ( n <= 0 )
            {
            System.out.println( "Error - n must be a natural number. Try again." );
            System.out.print( "Starting number: " );
            n = keyboard.nextInt();
            }
            
            System.out.print( n + "\t" );
            while ( n != 1 )
            {
                if ( n % 2 == 0 )
                {
                n = n/2;
                System.out.print( n + "\t" );
                steps ++;
                }
                
                else
                {
                n = ((3*n) + 1);
                System.out.print( n + "\t" );
                steps ++;
                }
            }
            
            System.out.println( "\n\nTerminated after " + steps + " steps." );
        }
    }
    

Picture of the output