120845

Appears in sequences

• Number of 4Xn 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-2) or (-2,0) and new values introduced in order 0..2.at n=7A275039
• Semiprimes k such that k+2 and k+6 are primes and k+4 and k+8 are all semiprimes.at n=31A392186