static int findNumber ( int n ) {
  int num = n - 1 ;
  num = 2 * ( int ) Math . pow ( 4 , num ) ;
  num = ( int ) Math . floor ( num / 3.0 ) ;
  return num ;
}

static int findNumber ( int n ) { int num = n - 1 ; num = 2 * ( int ) Math . pow ( 4 , num ) ; num = ( int ) Math . floor ( num / 3.0 ) ; return num ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (decimal_integer_literal) right: (cast_expression type: (integral_type) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal) (identifier))))))) (expression_statement (assignment_expression left: (identifier) right: (cast_expression type: (integral_type) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_floating_point_literal))))))) (return_statement (identifier))))