65171

Properties

Appears in sequences

• Lower twin primes with lower twin prime index.at n=33A088460
• Triangle T(n,k) by rows: T(n, k) = (n-k+1)*T(n-1, k-1) + k*T(n-1, k) + T(n-2, k-1) with T(n, 1) = T(n, n) = 1.at n=47A144438
• Triangle T(n,k) by rows: T(n, k) = (n-k+1)*T(n-1, k-1) + k*T(n-1, k) + T(n-2, k-1) with T(n, 1) = T(n, n) = 1.at n=52A144438
• Lexicographically earliest permutation of the primes such that successive absolute differences yield a permutation of all nonprime numbers.at n=27A203985
• Lesser of twin primes for which phi(p-1) < phi(p+1).at n=15A286715
• a(n) equals the smallest Sophie Germain prime q such that pi_(p,2p+1)(q,10,(1,3)) - pi_(p,2p+1)(q,10,(3,1)) = n, where pi_(p,2p+1)(q,10,(b,c)) equals the number of Sophie Germain primes A005384(i) such A005384(i) <= q and (A005384(i),A005384(i+1)) == (b,c) (mod 10).at n=18A333084
• Primes whose position in the Wythoff array is immediately followed by a prime both in the next column and the next row.at n=30A352537
• Prime numbersat n=6512