118259

Properties

Appears in sequences

• Primes p with A047967(p) also prime.at n=25A236418
• Numerators of upper primes-only best approximates (POBAs) to Pi; see Comments.at n=22A265810
• Expansion of -(4*x^3-7*x^2+4*x-1)/(2*x^4-5*x^3+8*x^2-5*x+1).at n=13A271176
• Primes that can be generated by the concatenation in base 9, in descending order, of two consecutive integers read in base 10.at n=41A287313
• a(n) = Sum_{d|n} (n/d)^d * binomial(d+n/d-1, d).at n=19A338662
• Primes p such that the sum of squares of primes < p is divisible by p.at n=3A338818
• Prime numbersat n=11156