-8589934592
domain: Z
Appears in sequences
- Expansion of e.g.f.: 1/2 + exp(-4*x)/2.at n=17A009117
- Generalized Gaussian Fibonacci integers.at n=34A088138
- Determinant of n X n partial Hadamard matrix with coefficient m(i,j) 1<=i,j<=n (see comment).at n=16A094384
- Hankel transform of Sum_{k=0..n} C(2k,k).at n=33A120580
- Hankel transform of g.f. 1/sqrt(1+4x^2).at n=33A120617
- Powers of -2: a(n) = (-2)^n.at n=33A122803
- Expansion of (1-4*x)/(1-2*x+4*x^2).at n=32A128018
- Hankel transform of A115962.at n=33A128063
- Hankel transform of a transform of the central binomial coefficients A001405.at n=11A134185
- Expansion of (1-x)/(1 - 2*x + 4*x^2).at n=33A138230
- Expansion of 1/(1 + 4*x + 8*x^2).at n=22A143462
- Hankel transform of A114464.at n=12A160636
- Hankel transform of A114464(n+1).at n=11A160637
- a(n) = 4*a(n-1) - 8*a(n-2), with a(0)=0, a(1)=1.at n=23A190966
- Alternating row sums of A346837.at n=34A347596