private static int f ( int n ) {
  if ( n == 1 ) {
    return 4 ;
  }
  if ( n == 2 ) {
    return 4 ;
  }
  if ( n == 3 ) {
    return 12 ;
  }
  if ( n % 2 == 0 ) {
    return ( n / 2 + 1 ) * ( n / 2 + 1 ) ;
  }
  else {
    return ( n / 2 + 2 ) * ( n / 2 + 1 ) * 2 ;
  }
}

private static int f ( int n ) { if ( n == 1 ) { return 4 ; } if ( n == 2 ) { return 4 ; } if ( n == 3 ) { return 12 ; } if ( n % 2 == 0 ) { return ( n / 2 + 1 ) * ( n / 2 + 1 ) ; } else { return ( n / 2 + 2 ) * ( n / 2 + 1 ) * 2 ; } }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (return_statement (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (return_statement (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (return_statement (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (return_statement (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) right: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal)))))) alternative: (block (return_statement (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) right: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal)))) right: (decimal_integer_literal)))))))