273417

Appears in sequences

• Integers k such that each of k, k+1, k+2, k+4, k+5, k+6 is the product of two distinct primes.at n=4A242804
• Semiprimes k such that k+1, k+2, 2*k+1 and 2*k+3 are also semiprimes.at n=22A362200