47303

Properties

Appears in sequences

• a(n) = A047980(2n).at n=39A047981
• Indices of primes in sequence defined by A(0) = 33, A(n) = 10*A(n-1) + 23 for n > 0.at n=10A056254
• For a prime p, let k(p) be the least k such that 2kp+1 is prime. Sequence gives primes for which k(p) exceeds k(q) for all primes q < p.at n=18A074884
• Balanced primes of order twelve.at n=15A096704
• Sequence is {a(2,n)}, where a(m,n) is defined at sequence A111518.at n=15A111520
• Primes p such that there exist primes p'<p"<p"'<p""<p such that the concatenation of any two among the {p,...,p""} is prime.at n=8A139005
• Primes which are the sum of two, three, four and five consecutive composite numbers.at n=2A151744
• a(n) = A186882(n+1) - A186882(n).at n=49A186883
• Balanced primes which are the average of two successive semiprimes.at n=27A212820
• The number of 1-length gaps in all possible covers of n-length line by 2-length segments.at n=33A228577
• Primes of the form k+(k+3)^2 where k is a nonnegative integer.at n=40A248697
• Indices of record values of A307437(k)/k.at n=21A341888
• a(n) = Sum_{k=0..n} (k+1) * binomial(k,2*(n-k)).at n=16A391962
• Prime numbersat n=4878