-2303

Appears in sequences

• Expansion of (1-x)^(-1)/(1+2*x-2*x^3).at n=21A077924
• Expansion of (1-x)^(-1)/(1+2*x-2*x^3).at n=22A077924
• a(n) = (-1)^n*n*(n-2).at n=48A131386
• Triangle read by rows: T(n, k) is the coefficient of x^k in the polynomial 1 - T_n(x)^2, where T_n(x) is the n-th Hermite polynomial of the Hochstadt kind (A137286) as related to the generalized Chebyshev in a Shabat way (A123583): p(x,n)=x*p(x,n-1)-p(x,n-2); q(x,n)=1-p(x,n)^2.at n=36A136667
• a(n) = 1 - n^2*2^n.at n=6A168298