29420

Appears in sequences

• Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w^2>=x^2+y^2.at n=39A211803
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 873", based on the 5-celled von Neumann neighborhood.at n=28A273709
• G.f. A(x) satisfies: [x^n] (1 + n*x + n*x^2 - A(x))^(n+1) = 0, for n > 0.at n=6A337758