103423

Properties

Appears in sequences

• Smallest prime of form (2n+1)*2^m-1 for some m, or 0 if no such prime exists.at n=50A057026
• Primes p such that p^3 is the concatenation of two k-digit primes where k is half the number of decimal digits in p^3.at n=20A248208
• a(n) = 2*a(n-1) + 1 for a(n-1) not prime, otherwise a(n) = prime(n) - 1; with a(1)=1.at n=35A374965
• Primes in A374965 in order of their occurrence.at n=7A375028
• a(n) = Sum_{k=0..floor(n/4)} binomial(n+k,k) * binomial(n-3*k,k).at n=17A383529
• Prime numbersat n=9886