283920

Appears in sequences

• Triangle T(n,k) of number of minimal 5-covers of a labeled n-set that cover k points of that set uniquely (k=5,..,n).at n=7A057966
• a(n) = floor(log(Fibonacci(prime(k))/prime(k))), where k = A119984(n).at n=38A134791
• A PolyLog functional polynomial coefficient triangular sequence: p(x,n)=(-1)^(n + 1)*(4*x + x^2)^(n + 1)*PolyLog[ -n, 1 + 4*x + x^2]/(1 + 4*x + x^2).at n=38A142146
• Area A of the triangles such that A, the sides and two medians are integers.at n=13A181928
• Expansion of e.g.f. 1/(1 - x * exp(x^2))^2.at n=7A377533