87382

Appears in sequences

• Numbers k such that x^k + x + 1 is irreducible over GF(2).at n=40A002475
• a(2*n) = 2*a(2*n-1), a(2*n+1) = 2*a(2*n)-1.at n=18A005578
• a(n) = (8^n + 2*(-1)^n)/3.at n=6A007613
• a(n) = a(n-1) + 2*a(n-2) with a(0)=0, a(1)=2.at n=17A014113
• a(n) = C(n,0) + C(n,3) + ... + C(n,3[n/3]).at n=18A024493
• Array A read by diagonals; n-th difference of (A(k,n), A(k,n-1),..., A(k,0)) is (k+2)^(n-1), for n=1,2,3,...; k=0,1,2,...at n=56A047848
• a(n) = (4^n + 2)/3.at n=9A047849
• Expansion of 2*(1-x-x^2)/((1-x)*(1+x)*(1-2*x)).at n=17A052953
• Prime factorization of n encoded with the run lengths of binary expansion + 1.at n=58A075160
• Expansion of (1 - x)/((1 + x)*(1 - 2*x)).at n=18A078008
• Expansion of (1-x)/(1+x+2*x^2+2*x^3).at n=36A078052
• 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=18A080880
• 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=17A081374
• a(n) = 2^n - A081374(n).at n=16A083322
• Binomial transform of (-1)^mod(n,3) (A257075).at n=18A086953
• Generalized Jacobsthal sequence.at n=18A087628
• Generalized Jacobsthal sequence.at n=17A087628
• Generalized Jacobsthal sequence.at n=18A087629
• Expansion of (1+4x+x^2-10x^3)/((1-x)(1-x-2x^2)).at n=15A093380
• Pair reversal of a Jacobsthal sequence.at n=19A094359