71520

Appears in sequences

• Numbers k such that 2*prime(k)+1, 2*prime(k+1)+1 and 2*prime(k+2)-1 are also consecutive primes.at n=12A103851
• Numbers n such that 2*P(n)+1, 2*P(n+1)+1, and 2*P(n+2)-1 are also consecutive primes with P(n+1)=P(n)+6 and P(n+2)=P(n+1)+2 with P(i)=i-th prime.at n=9A103852
• Number of length n+5 0..1 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=17A256820
• Total number of colors in all partitions of n into colored blocks of equal parts, such that all colors from a given set are used and the colors are introduced in increasing order.at n=24A322304
• Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^(k^5).at n=7A343285
• Number of Q-isomorphism classes of elliptic curves E/Q with good reduction outside the first n prime numbers.at n=4A361661