3041280

Appears in sequences

• Expansion of e.g.f. x^4*exp(x)^2.at n=12A052796
• a(n) = phi(binomial(2n, n)).at n=12A066973
• The lower left triangle of the ED2 array A167560.at n=31A167569
• 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 310", based on the 5-celled von Neumann neighborhood.at n=21A287604
• Number of defective (binary) heaps on n elements where one ancestor-successor pair does not have the correct order.at n=13A324062
• a(n) = Sum_{k=0..floor(n/3)} 2^k * 3^(n-3*k) * binomial(k,4*(n-3*k)).at n=35A392074