357913942

Appears in sequences

• a(2*n) = 2*a(2*n-1), a(2*n+1) = 2*a(2*n)-1.at n=30A005578
• a(n) = (8^n + 2*(-1)^n)/3.at n=10A007613
• a(n) = a(n-1) + 2*a(n-2) with a(0)=0, a(1)=2.at n=29A014113
• a(n) = C(n,0) + C(n,3) + ... + C(n,3[n/3]).at n=30A024493
• a(n) = (4^n + 2)/3.at n=15A047849
• Expansion of 2*(1-x-x^2)/((1-x)*(1+x)*(1-2*x)).at n=29A052953
• Expansion of (1 - x)/((1 + x)*(1 - 2*x)).at n=30A078008
• a(n)*a(n+3) - a(n+1)*a(n+2) = 2^n, given a(0)=1, a(1)=2, a(2)=2.at n=30A080880
• Size of "uniform" Hamming covers of distance 1, that is, Hamming covers in which all vectors of equal weight are treated the same, included or excluded from the cover together.at n=29A081374
• a(n) = 2^n - A081374(n).at n=28A083322
• Binomial transform of (-1)^mod(n,3) (A257075).at n=30A086953
• Generalized Jacobsthal sequence.at n=29A087628
• Generalized Jacobsthal sequence.at n=30A087628
• Generalized Jacobsthal sequence.at n=30A087629
• Expansion of (1+4x+x^2-10x^3)/((1-x)(1-x-2x^2)).at n=27A093380
• Pair reversal of a Jacobsthal sequence.at n=31A094359
• Expansion of -2*x*(-3-2*x+4*x^2) / ((x-1)*(2*x+1)*(2*x-1)*(1+x)).at n=27A120462
• Jacobsthal numbers(A001045) + 1.at n=30A128209
• a(n+3) = 3*(a(n+2) - a(n+1)) + 2*a(n).at n=30A130707
• Sequence is identical to its third differences: a(n+3) = 3*a(n+2) - 3*a(n+1) + 2*a(n), with a(0)=a(1)=1, a(2)=2.at n=29A130781