text: base cases
code: if ( n == 3 ) : NEW_LINE INDENT return 2 ; NEW_LINE DEDENT else : NEW_LINE INDENT return ( printTetraRec ( n - 1 ) + printTetraRec ( n - 2 ) + printTetraRec ( n - 3 ) + printTetraRec ( n - 4 ) ) ; NEW_LINE DEDENT