117832

Appears in sequences

• If n mod 2 = 0 then 2*Sum(floor(C(n,w)/(2*w+1)),w=0..n/2-1)+floor(C(n,n/2)/(n+1)) otherwise 2*Sum(floor(C(n,w)/(2*w+1)),w=0..(n-1)/2).at n=21A085570
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 627", based on the 5-celled von Neumann neighborhood.at n=16A283379
• Number of tetrahedra in the n X n white bishop graph.at n=24A391027