357913940

Appears in sequences

• Barlow packings with group R3(bar)m(SO) that repeat after 6n+3 layers.at n=29A011954
• a(n) = a(n-1) + 2*a(n-2) + 2, for n>=3, where a(0)= 1, a(1)= 2, a(2)= 4.at n=28A026644
• Partial sums of Jacobsthal gap sequence.at n=28A080610
• a(n) = (4/3)*(4^n - 1).at n=14A080674
• a(n) = -5*a(n-1) - 4*a(n-2), a(0)=1, a(1)=0.at n=15A084240
• Expansion of x*(1+2*x)/((1+x)*(1-x)*(1-2*x)).at n=28A084639
• Expansion of (1+x-4*x^2) / ((1+x)*(1-4*x^2)).at n=29A087213
• Expansion of (1 - 2*x + 2*x^2)/((1 - x^2)*(1 - 2*x)).at n=29A097072
• Expansion of (1-x+2*x^2)/((1+x)*(1-2*x)).at n=29A097073
• Expansion of (1+3x)/((1-x)(1-4x^2)).at n=27A097164
• Expansion of -2*x*(-3-2*x+4*x^2) / ((x-1)*(2*x+1)*(2*x-1)*(1+x)).at n=28A120462
• First differences of A130624.at n=28A130625
• a(1)=1, a(n) = a(n-1) + (p-1)*p^(n/2-1) if n is even, else a(n) = a(n-1) + p^((n-1)/2), where p=4.at n=27A133628
• Second differences of Jacobsthal sequence A001045, pairs with even and odd indices swapped.at n=31A140505
• a(n) = (2^n + 2*(-1)^n - 6)/3.at n=30A153772
• Duplicate of A080674.at n=13A155721
• a(n) = (2^n - (-1)^n - 3)/3.at n=30A167030
• a(n) = J(n) if n odd, or 4*J(n) if n even, where J = Jacobsthal numbers A001045.at n=28A270797
• 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 553", based on the 5-celled von Neumann neighborhood.at n=28A282579
• 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 505", based on the 5-celled von Neumann neighborhood.at n=29A282798