-106496

Appears in sequences

• Triangle read by rows: T(n, k) is the coefficient of x^k in the polynomial 1 - ChT(n, x^(1/2))^2, where ChT(n, x) is the n-th Chebyshev polynomial of the first kind, evaluated at x (0 <= k <= n).at n=42A123588
• a(n) = C(n+11, 11)*(n+6)*(-1)^(n+1)*512/3.at n=2A138334