static int sumofsquare ( int n ) {
  return factorial ( n + 1 , 2 * n ) / factorial ( 1 , n ) ;
}

static int sumofsquare ( int n ) { return factorial ( n + 1 , 2 * n ) / factorial ( 1 , n ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)) (binary_expression left: (decimal_integer_literal) right: (identifier)))) right: (method_invocation name: (identifier) arguments: (argument_list (decimal_integer_literal) (identifier)))))))