-27456

Appears in sequences

• G.f.: Product_{i>=1} (1 - 2*(-x)^i)/(1 - (-x)^i)^2.at n=48A104510
• Sequence of Mahler coefficients of the Gray code function.at n=15A109629
• Coefficient array for the third power of the monic integer Chebyshev polynomials 2*T(2*n,x/2) as a function of x^2.at n=27A219236
• Coefficient array for the powers of x^2 of the square of the even-indexed Chebyshev C polynomials.at n=41A220668
• G.f.: Sum_{n=-oo..+oo} x^(n^2) * C(x)^(4*n-4), where C(x) = 1 + x*C(x)^2 is the g.f. of the Catalan numbers (A000108).at n=32A356778