-14348907

Appears in sequences

• Expansion of bracket function.at n=30A000748
• Scaled Chebyshev U-polynomials evaluated at sqrt(3)/2; expansion of 1/(1 - 3*x + 3*x^2).at n=30A057083
• a(n) = Sum_{j=0..floor(n/3)} (-1)^j*binomial(n,3*j).at n=31A057681
• a(n) = Sum_{j=0..floor(n/3)} (-1)^j*binomial(n,3*j).at n=32A057681
• a(n) = Sum_{j=0..floor(n/3)} (-1)^j*binomial(n,3*j+1).at n=31A057682
• Expansion of (1-3*x+12*x^2)/((1-3*x)*(1+3*x)).at n=15A091103
• A transform of the Jacobsthal numbers.at n=32A103312
• A transform of the Jacobsthal numbers.at n=33A103312
• Expansion of (1+2*x)/(1+3*x+3*x^2).at n=30A123877
• Expansion of (1 - 3x)/(1 + 3*x^2).at n=29A128019
• Expansion of (1 - 3x)/(1 + 3*x^2).at n=30A128019
• Inverse binomial transform of A140962.at n=17A141413
• G.f.: A(x) = 1 + x/exp( Sum_{k>=1} (A((-1)^k*x) - 1)^k/k ).at n=32A157674
• a(n) = 3*a(n-2) for n > 2; a(1) = 3, a(2) = -1.at n=31A162852
• a(n) = 3*a(n-1) - 9*a(n-2), with a(0)=0, a(1)=1.at n=16A190963
• Expansion of g.f. (x + x^2)/(1 + 3*x^2).at n=31A287479
• Expansion of g.f. (x + x^2)/(1 + 3*x^2).at n=32A287479
• Powers of -3: a(n) = (-3)^n.at n=15A352779