2312267

Properties

Appears in sequences

• For the Collatz (3x+1) iterations starting with a prime number p, a(n) is the smallest p such that the trajectory contains n successive prime numbers.at n=12A225851
• a(n) = Sum_{k=0..floor(n/2)} binomial(n,k) * binomial(n+k,n-2*k).at n=12A378405
• Prime numbersat n=170354