57917

Properties

Appears in sequences

• Numbers k such that (3^k - 1)/2 is prime.at n=15A028491
• Numbers n such that 3^n has the form 2p-+1 where p is prime.at n=21A096723
• a(n) = floor(r^n) where r is the smallest Pisot number (real root r=1.3247179... of x^3-x-1).at n=39A112639
• Primes p such that p^2*q^2*r^2 + 12 and p^2*q^2*r^2 - 12 are primes where q and r are next two primes after p.at n=23A240725
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 350", based on the 5-celled von Neumann neighborhood.at n=8A271302
• Number of ways to split an integer partition of n into contiguous subsequences with strictly decreasing sums.at n=25A336135
• Prime numbersat n=5867