53889

Appears in sequences

• a(n) = n*(3*n^2 - 1)/2.at n=33A004188
• Truncated octahedron with faces of centered polygons.at n=16A193228
• Number of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=14A250725
• a(n) is the number of integer triples (x,y,z) satisfying a system of linear inequalities and congruences specified in the comments.at n=48A370349