39464

Appears in sequences

• Numbers k such that 5*R_k + 4 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=14A099418
• a(n)=least number m such that gcd(prime(m)+2,prime(m+1)+2) = 2*n-1.at n=15A268863
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 705", based on the 5-celled von Neumann neighborhood.at n=30A273419
• Numbers that are the sum of four third powers in exactly seven ways.at n=34A345151