static int seriesSum ( int calculated , int current , int N ) {
  int i , cur = 1 ;
  if ( current == N + 1 ) return 0 ;
  for ( i = calculated ;
  i < calculated + current ;
  i ++ ) cur *= i ;
  return cur + seriesSum ( i , current + 1 , N ) ;
}

static int seriesSum ( int calculated , int current , int N ) { int i , cur = 1 ; if ( current == N + 1 ) return 0 ; for ( i = calculated ; i < calculated + current ; i ++ ) cur *= i ; return cur + seriesSum ( i , current + 1 , N ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (return_statement (decimal_integer_literal))) (for_statement init: (assignment_expression left: (identifier) right: (identifier)) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier))) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (identifier) right: (identifier)))) (return_statement (binary_expression left: (identifier) right: (method_invocation name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)) (identifier)))))))