283115520

Appears in sequences

• a(n) = Product_{k=1..n-1} (ceiling(n/k) - ceiling(n/k) mod 2).at n=18A145119
• G.f.: A(x) = Sum_{n>=0} ( Sum_{k>=1} (2^n*2^k*x)^k/k )^n / n!, a power series in x with integer coefficients.at n=5A156631
• Product_{i=1..n} A173557(i).at n=17A239682
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 838", based on the 5-celled von Neumann neighborhood.at n=28A290547