-1104

Appears in sequences

• tanh(sec(x)*arcsin(x))=x+2/3!*x^3-20/5!*x^5-1104/7!*x^7-23728/9!*x^9...at n=3A012790
• Expansion of e.g.f. arcsinh(exp(x) - sec(x)).at n=8A013334
• Expansion of 1 / ((1-x)*(1-x+x^2+x^3)).at n=29A077872
• Expansion of (1-x)^(-1)/(1 + x - x^2 + x^3).at n=13A077902
• Expansion of (1-x)^(-1)/(1+x+x^2-x^3).at n=31A077908
• Expansion of (1-x)/(1-2*x^2+2*x^3).at n=13A078025
• a(1)=a(2)=a(3)=1; a(n)=|a(n-2)+a(n-3)|-2*a(n-1).at n=13A080206
• Expansion of chi(x) / phi(x^2) in powers of x where phi(), chi() are Ramanujan theta functions.at n=26A085261
• a(1)=1, a(2)=1, a(n) = (n-1)*a(n-1) - (n-2)*a(n-2) - ... - a(1) for n>=3.at n=7A106539
• Eulerian polynomials at nonpositive integers, A_{n}(-n).at n=5A180085
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 534", based on the 5-celled von Neumann neighborhood.at n=41A272789
• Coefficients in expansion of E_2^(1/4).at n=3A289392
• Expansion of Sum_{k>=1} k * x^k * (1 - x^k) / (1 + x^k)^3.at n=45A326238
• Square array A(n, k) = A329644(prime(n)^k), read by falling antidiagonals: (1,1), (1,2), (2,1), (1,3), (2,2), (3,1), ...at n=47A329637
• Expansion of 1 / (1 + Sum_{k>=1} lambda(k)*x^k), where lambda() is the Liouville function (A008836).at n=20A356907
• Expansion of Sum_{k>0} k^2 * x^k/(1 + x^k)^3.at n=23A364351