25542

Appears in sequences

• Coefficient of q^3 in nu(n), where nu(0)=1, nu(1)=b and, for n>=2, nu(n)=b*nu(n-1)+lambda*(1+q+q^2+...+q^(n-2))*nu(n-2) with (b,lambda)=(1,3).at n=10A074357
• Conjectured lower bound for the number of spheres of radius 1 that can be packed in a sphere of radius n.at n=31A121346
• Normalized average squared end-to-end distance of n-step prudent walks.at n=5A151719
• Number of ordered octuples of distinct pairwise coprime positive integers with largest element n.at n=35A186979
• Number of pairs of intersecting diagonals in the exterior of a regular n-gon.at n=24A211381
• Number of intersections of diagonals in the exterior of a regular n-gon.at n=24A211382
• Real part of Sum_{k=0..n} (k + i^k)^2, where i=sqrt(-1).at n=42A236377
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 517", based on the 5-celled von Neumann neighborhood.at n=29A272732
• Records in A240751.at n=30A285312
• Positive numbers k such that -k, -(k + 1), and -(k + 2) are 3 consecutive negative negaFibonacci-Niven numbers (A331088).at n=49A331090
• Numbers k that divide the k-th companion Pell number.at n=35A372899