67108862

Appears in sequences

• a(n) = 2^n - 2.at n=26A000918
• Numerator of the expected time to finish a random Tower of Hanoi problem with n disks using optimal moves.at n=25A060590
• Expansion of (1-x+2x^2)/((1-x)*(1-2x)).at n=25A095121
• a(0) = 1, a(n) = (-1)^n*(2-2^(n-1)) for n>0.at n=27A122959
• Partial sums of A130752.at n=24A130869
• Row sums of triangle A134066.at n=24A134067
• a(n) = a(n-1) + 2a(n-2).at n=26A135440
• a(2*n) = 2*(2*4^(n-1)-1) and a(2*n-1) = 2*4^(n-1)-1.at n=26A140253
• Number of length n+2 0..1 arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero.at n=24A250554
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 261", based on the 5-celled von Neumann neighborhood.at n=25A280412
• Reduced denominators of f(n) = (n+1)/(2^(2+n)-2) with A026741(n+1) as numerators.at n=24A281500
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 413", based on the 5-celled von Neumann neighborhood.at n=25A282004
• Expansion of x*(1 - 2*x + 3*x^2)/((1 - x)*(1 - 2*x)*(1 - x + x^2)).at n=26A282153
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 493", based on the 5-celled von Neumann neighborhood.at n=25A282658
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 617", based on the 5-celled von Neumann neighborhood.at n=26A283349
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 617", based on the 5-celled von Neumann neighborhood.at n=26A283350
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 619", based on the 5-celled von Neumann neighborhood.at n=25A283353
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 657", based on the 5-celled von Neumann neighborhood.at n=25A283591
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 721", based on the 5-celled von Neumann neighborhood.at n=25A283709
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 221", based on the 5-celled von Neumann neighborhood.at n=25A286772