#!/usr/bin/env python

def f1 ( i ) :

#*****************************************************************************80
#
## F1 is the iteration function for example 1.
#
#  Discussion:
#
#    This function has two cycles:
#
#    6, 3, 1, of length 3
#    4, of length 1
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license.
#
#  Modified:
#
#    13 May 2013
#
#  Author:
#
#    John Burkardt
#
#  Parameters:
#
#    Input, integer I, the argument of the function.
#    0 <= I <= 9.
#
#    Output, integer VALUE, the value of the function.
#
  f_table = [ 6, 6, 0, 1, 4, 3, 3, 4, 0 ]

  value = f_table [i]

  return value