-268435456

Appears in sequences

• Inverse binomial transform of repeated odd numbers.at n=29A084633
• Generalized Gaussian Fibonacci integers.at n=29A088138
• Expansion of (1-2*x)/(1-8*x^2).at n=19A094014
• Expansion of g.f. (1+x)/(1+2*x+4*x^2).at n=29A104537
• Expansion of (1-x^2-2x^3)/(1-4x^3).at n=44A117902
• Hankel transform of Sum_{k=0..floor(n/2)} binomial(2*k, k).at n=28A120582
• a(n) = mu(n) * 2^(n-1).at n=28A127511
• a(n) = A135574(n+1) - 2*A135574(n).at n=28A135575
• Hankel transform of a transform of Fibonacci numbers.at n=27A141125
• a(n) = A154570(n) + A154570(n+1).at n=29A154589
• a(n) = A156591(n) + A156591(n+1).at n=29A157823
• a(n) = -3a(n-1) - 3a(n-2) - 2a(n-3), n > 3.at n=29A158927
• Expansion of (1-x)/(1+4*x^2).at n=29A164111
• a(n) = 4*( 1-(-1)^n) -2^n.at n=28A166978
• A (3/2,-1) Somos-4 sequence.at n=28A174882
• A (3/2,-1) Somos-4 sequence.at n=29A174882
• Dirichlet inverse of A011782, 2^(n-1).at n=28A349452