53072

Appears in sequences

• Numbers k such that 3^(2*k-1) + 2 is prime.at n=16A134753
• Numbers d*p where d is a perfect number and p<d a prime not dividing d.at n=35A165772
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 241", based on the 5-celled von Neumann neighborhood.at n=7A270989