public static int nthTerm ( int N ) {
  return N * N + ( N + 1 ) * ( N + 1 ) ;
}

public static int nthTerm ( int N ) { return N * N + ( N + 1 ) * ( N + 1 ) ; }
(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: (binary_expression left: (identifier) right: (identifier)) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))))))))