187932domain: NAppears in sequencesa(1) is the least k such that j(1) = k*2*3 - 1 is the lesser of a twin prime pair; then for n > 1, a(n) is the least k greater than a(n-1) such that j(n) = k*j(n-1)*(j(n-1)+2) - 1 is the lesser of a twin prime pair.at n=6A107485Number of twins of prime quadruples < 10^n.at n=14A338866