64439

Properties

Appears in sequences

• Numbers k such that x^k + x^8 + 1 is irreducible over GF(2).at n=13A057478
• Triangle T(n,k) = number of polyhedra (triconnected planar graphs) with n faces and k vertices, where (n/2+2) <= k <= (2n+8).at n=41A058787
• Triangle T(n,k) = number of polyhedra (triconnected planar graphs) with n faces and k vertices, where (n/2+2) <= k <= (2n+8).at n=51A058787
• Triangle T(n,k) = number of polyhedra (triconnected planar graphs) with n edges and k vertices (or k faces), where (n/3+2) <= k <= (2n/3). Note that there is no such k when n=7.at n=42A058788
• Triangle T(n,k) = number of polyhedra (triconnected planar graphs) with n edges and k vertices (or k faces), where (n/3+2) <= k <= (2n/3). Note that there is no such k when n=7.at n=43A058788
• Number of polyhedra with n faces and n+1 vertices (or n vertices and n+1 faces).at n=7A058789
• G.f.: A(x) = Product_{n>=1} 1/(1 - n*A007947(n)*x^n)^(1/n^2), where A007947(n) is the product of the distinct prime factors of n.at n=19A095895
• Sophie Germain primes in A154939.at n=31A154941
• Primes of the form (p^2 - 3)/2 where p is also prime.at n=34A165635
• Irregular triangle read by rows: T(n,k) is the number of polyhedra with n faces and k vertices (n >= 4, k=4..2n-4).at n=57A212438
• Prime numbersat n=6448