-3323

Appears in sequences

• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 225", based on the 5-celled von Neumann neighborhood.at n=43A270945
• Coefficients in the power series expansion of A(x) = Sum_{n=-oo..+oo} n*(n+1)/2 * x^(2*n) * (1 - x^n)^(n-2).at n=40A356775
• The unique sequence such that Sum_{d|n} d*a(d)^(n/d) = sigma(n)^2 for every n.at n=24A383614