-559

Appears in sequences

• Numerators of sequence having sqrt(cos(x)) as e.g.f. (even-indexed coefficients only).at n=4A008990
• Numerators of expansion of a function eta(x) related to Cremer points.at n=12A058969
• Array T(r,c) read by antidiagonals: values of triangle A098493 interpreted as polynomials, r >= 0.at n=81A098495
• Expansion of 1/(1-x*(1-5*x)).at n=13A106854
• a(0)=1, a(1)=2 continued recursively a(n) = (n-1)*a(n-1) - a(n-2) if n is even and a(n) = a(n-1) - (n-2)*a(n-2) if n is odd.at n=17A122578
• Expansion of (1-2x-5x^2-7x^3+x^6)/((1-x)(1-x^3)^2).at n=28A141352
• Triangle read by rows, A118433 * A007318^(-1) * A000012.at n=48A144221
• Hankel transform of A174399.at n=14A174400
• a(n) = floor(d(n)/18^(n-1)) where d(n) = 0, 1, -8, 352, -5120,.. and d(n) = -8*d(n-1) +288*d(n-2).at n=40A174427
• Numerators of coefficients of expansion of exp(-Sum_{k=0..oo} x^(2^k)/2^k ) in powers of x.at n=11A256401
• E.g.f.: Limit_{N->oo} [ Sum_{n>=0} (N - n)^(2*n) * (x/N)^n/n! ]^(1/N).at n=4A266487
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 337", based on the 5-celled von Neumann neighborhood.at n=13A271288
• a(n) = nearest integer to n^2 * sin(sqrt(n)).at n=33A274088
• The Euclid tree with root 1 encoded by semiprimes, read across levels.at n=23A295512
• Expansion of Product_{k>=1} ((1 + x^(2*k-1))/(1 + x^(2*k)))^k.at n=51A296047
• Dirichlet inverse of A064664, the inverse permutation of EKG-sequence.at n=44A323411
• First term of n-th difference sequence of (floor(r*k)), r = log(2), k >= 0.at n=15A325751
• Coefficients in the power series expansion of A(x) = Sum_{n=-oo..+oo} n*(n+1)/2 * x^(2*n) * (1 - x^n)^(n-2).at n=33A356775