68001

Appears in sequences

• a(n) = [ (3rd elementary symmetric function of P(n))/(first elementary symmetric function of P(n)) ], where P(n) = {1, p(1), p(2), ..., p(n-1)}, where p(0) = 1.at n=19A024532
• Expansion of exp(3*x) - exp(x)*(1-BesselI_0(2*x)).at n=10A081673
• Number of partitions of n such that the number of parts and the largest part and the smallest part are pairwise coprime.at n=46A201218
• Number of (w,x,y,z) with all terms in {0,...,n} such that range{w,x,y,z} is not one of the numbers w,x,y,z.at n=17A212569
• Partial sums of icosahedral numbers (A006564).at n=17A302560
• a(n) = Sum_{k=0..floor(n/3)} binomial(2*n,n-3*k).at n=9A360168