36251

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 4x + 3.at n=18A023311
• Primes that remain prime through 5 iterations of function f(x) = 4x + 3.at n=5A023339
• G.f. satisfies A(x) = 1 + x*(1 + x*A(x)^6)^5.at n=6A137973
• a(n) = 58*n^2 + 1.at n=25A158666
• Primes p with pi(p) and pi(p^2) both prime, where pi(.) is given by A000720.at n=36A237659
• Primes p such that p*q*r + 6 and p*q*r - 6 are primes where q and r are the next two primes after p.at n=25A240715
• Number k such that k^2 + 1 = p*q*r where p,q,r are distinct primes and the sum p+q+r is a perfect square.at n=17A261529
• Emirps that can be written as p*q+p+q where p and q are emirps.at n=12A352249
• Primes that are the concatenation of a square and a prime that is the concatenation of two squares.at n=25A364359
• Prime numbersat n=3847