-114688

Appears in sequences

• Berstel sequence: a(n+1) = 2*a(n) - 4*a(n-1) + 4*a(n-2).at n=23A007420
• Column 0 of triangle A118441, which is the matrix log of triangle A118435.at n=14A118442
• Matrix log of triangle A111636, where A111636(n,k) = (2^k)^(n-k)*C(n,k) for n>=k>=0.at n=42A134530
• Alternated reading of A000302 and negated A002042.at n=15A140721
• Expansion of g.f. x/(1 + 4*x - 8*x^2).at n=8A174443
• a(n) = sin((2*n+5)*Pi/6)*(n+1)*2^(n+1).at n=13A176900
• Triangle read by rows: T(0,0) = 1; T(n,k) = 2*T(n-1,k) - T(n-3,k-1) for k = 0..floor(n/3); T(n,k)=0 for n or k < 0.at n=52A317504
• Triangle read by rows: T(0,0) = 1; T(n,k) = 2 T(n-1,k) - T(n-4,k-1) for 0 <= k <= floor(n/4); T(n,k)=0 for n or k < 0.at n=46A317506