22916

Appears in sequences

• Number of Dyck paths of semilength n with no peak at height 4.at n=11A059027
• Number of triangles in an n X n unit grid that have minimal possible area (of 1/2).at n=13A088658
• Molecular topological indices of the sun graphs.at n=16A192845
• Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..1 n X 3 array.at n=8A218079
• T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..1 nXk array.at n=57A218084
• Number of positive solutions to x^2+y^2+z^2 <= n^2.at n=36A253663
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 563", based on the 5-celled von Neumann neighborhood.at n=27A272941
• a(n) = ceiling(A293160(n)/2).at n=23A293161
• a(n) = Sum_{i=1..n, j=1..n, gcd(i,j)=2} (n+1-i)*(n+1-j).at n=26A331761