536870912

Appears in sequences

• a(n) = 2^(2n+1).at n=14A004171
• Number of nonzero coefficients of order n in Baker-Campbell-Hausdorff expansion.at n=30A005489
• Coefficients of expansion of (1-x)/(1-2*x) in powers of x.at n=30A011782
• a(n) = 2^(3*n+2).at n=9A013731
• a(n) = 2^(4*n+1).at n=7A013776
• a(n) = 2^(5*n + 4).at n=5A013825
• Expansion of g.f.: 2*x*(1-x)/((1-2*x)*(1-2*x^2)).at n=29A014236
• Smallest k such that 1/k can be written as a sum of exactly 2 unit fractions in n ways.at n=29A016017
• Least k such that (tau(k^k)+k-1)/k=n.at n=29A016025
• Pisot sequences E(4,8), L(4,8), P(4,8), T(4,8).at n=27A020707
• Theta series of D*_29 lattice.at n=29A022082
• a(n) = Sum_{k=0..m} (k+1) * A026022(n, m-k), where m=n for n=0,1 and m = floor((n+3)/2) for n >= 2.at n=28A027299
• Smallest number > 1 equal to sum of n-th powers of its base-4 digits, or 0 if no such number exists (written in base 10).at n=28A033836
• a(n) = floor(2^|n-1|/2). Or: 1, 0, followed by powers of 2.at n=31A034008
• Dirichlet convolution of b_n=2^(n-1) with itself.at n=28A034733
• a(n) = 2^(n-th prime).at n=9A034785
• Coordination sequence for diamond structure D^+_30. (Edges defined by l_1 norm = 1.)at n=15A035891
• Denominator of Sum_{i=1..n} i/2^i.at n=29A036296
• a(n) = 2^n*n^(n-1).at n=7A038057
• Number of 2n-bead balanced binary strings, rotationally equivalent to complement.at n=29A045654