336384

Appears in sequences

• Number of collinear point-triples in an n X n grid.at n=25A000938
• Number of n X 5 0..1 arrays with rows and columns lexicographically nondecreasing read forwards, and nonincreasing read backwards.at n=15A201372
• Expansion of e.g.f. Product_{k>=1} (1 - log(1 - x)*x^k).at n=8A322613
• Number of unit square faces (or surface area) of a stage-n Menger sponge.at n=4A332705
• a(n) = (n^2+n+1)*(n^2+n)*n^2.at n=8A356768
• a(n) = Sum_{k=0..floor(n/3)} 2^(n-k) * binomial(n-2*k,k)^2.at n=11A387509