1049624576

Appears in sequences

• Negated coefficients of Chebyshev T polynomials: [x^n](-T(n+6, x)), n >= 0.at n=20A001794
• 5-fold convolution of A000302 (powers of 4); expansion of 1/(1-4*x)^5.at n=10A040075
• Coefficients of (-x^(2n-6)) in Chebyshev polynomial of degree 2n.at n=10A068548
• a(n) = (1+(-1)^n)/2*4^n*(C((3*n)/2-1,n))+(1-(-1)^n)/2*((C((3*n-1)/2,n))*(C(3*n-1,(3*n-1)/2)))/(C(n-1,(n-1)/2)).at n=10A348618