static void triangular_series ( int n ) {
  int i , j = 1 , k = 1 ;
  for ( i = 1 ;
  i <= n ;
  i ++ ) {
    System . out . printf ( "%d " , k ) ;
    j = j + 1 ;
    k = k + j ;
  }
}

static void triangular_series ( int n ) { int i , j = 1 , k = 1 ; for ( i = 1 ; i <= n ; i ++ ) { System . out . printf ( " % d ▁ " , k ) ; j = j + 1 ; k = k + j ; } }
(method_declaration (modifiers) type: (void_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)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (assignment_expression left: (identifier) right: (decimal_integer_literal)) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal) (identifier)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier))))))))