196341domain: NAppears in sequencesNumber of (w,x,y,z) with all terms in {1,...,n} and w <= (geometric mean of x,y,z).at n=26A212143Semiprimes A001358(k) = p*q such that p*q+p+q and r*s+r+s are consecutive primes, where A001358(k+1)=r*s.at n=26A330478Number of mutual-visibility sets in the n-sun graph.at n=9A389173