-1392

Appears in sequences

• arctanh(arctan(arctan(x)))=x-2/3!*x^3+32/5!*x^5-1392/7!*x^7+118400/9!*x^9...at n=3A012209
• Expansion of 1/((1-x)*(1+x+2*x^2+x^3)).at n=27A077913
• Coefficients of the C-Rogers-Selberg identity.at n=55A104410
• Expansion of q^(-1) * psi(-q) / psi(-q^3)^3 in powers of q where psi() is a Ramanujan theta function.at n=37A133637
• G.f.: q-Cosh(x,q)^2 - q-Sinh(x,q)^2 at q=-x.at n=53A198199
• G.f.: Product_{n>=1} ((1-x^n)/(1+x^n))^(2*n).at n=15A216406
• Poly-Cauchy numbers of the second kind hat c_n^(-2).at n=5A223899
• Expansion of phi(q^9) / phi(q) in powers of q where phi() is a Ramanujan theta function.at n=15A261988
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 203", based on the 5-celled von Neumann neighborhood.at n=21A270728
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 662", based on the 5-celled von Neumann neighborhood.at n=43A273391
• E.g.f. A(x) = F(x)^2, where F(F(x)) = sin(x).at n=4A280795
• Expansion of ((eta(q)eta(q^3))/eta(q^2)^2)^2 in powers of q.at n=15A293389
• Expansion of Product_{k>=1} 1/(1 + x^k)^(k*(5*k-3)/2).at n=9A295122
• Expansion of 1 / Sum_{k in Z} x^(2*k) / (1 - x^(5*k+2)).at n=44A375061