78774domain: NAppears in sequences[ (4th elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+3 positive integers congruent to 2 mod 3}.at n=23A024402Lesser of 2 successive tetraprimes (k, k+4) sandwiching three consecutive not squarefree numbers.at n=20A367791