Expression 3: "b" Subscript, 1 , Baseline to left parenthesis, mod left parenthesis, left bracket, 0... "a" squared minus 2 , right bracket , "a" , right parenthesis , floor left parenthesis, StartFraction, left bracket, "a" squared minus 1...1 , right bracket Over "a" , EndFraction , right parenthesis , right parenthesis , "b" Subscript, 2 , Baseline to left parenthesis, "a" minus 1 , 0 , right parenthesisb1→mod0...a2−2,a,floora2−1...1a,b2→a−1,0
3
Expression 4: "b" Subscript, 1 , Baseline to shuffle left parenthesis, "b" Subscript, 1 , Baseline , right parenthesisb1→shuffleb1