257863

Properties

Appears in sequences

• Beginning of n consecutive quadratic residues mod A025046(n).at n=34A048282
• Primes occurring in exactly three prime triples (p,q,r) with p<q<r=p+6.at n=29A098423
• G.f. A(x) satisfies A(x) = 1+x*A(x)+x^2*A(x)^2+2*x^3*A(x)^3.at n=12A186239
• a(1) = 3; a(2) = 5; a(n+1) = a(n) + b(n), where b(n) = max {a(n-1)+-1, a(n-2)+-1, a(n-3)+-1, ..., a(1)+-1} such that a(n) + b(n) is a prime.at n=42A352952
• Prime numbersat n=22663