183439

Properties

Appears in sequences

• a(n) = pi((sqrt(P(n))+1)^2) - pi(P(n)), where pi(n) = number of primes <= n and P(n) = n-th primorial.at n=11A166678
• G.f. is the cube of the g.f. of A006950.at n=24A273226
• Nontrivial odd solutions n to P(n) == 1+r*Sum_{i=1..d(n)} x^i mod m where P(n) is the n-th Stern polynomial, d(n) is the degree of P(n), r=0, m=3.at n=7A327848
• Prime numbersat n=16617