-288000

Appears in sequences

• Expansion of e.g.f. log(1+x*cos(x)).at n=10A003728
• Triangle read by rows: T(n,k) = (-1)^k * n! * 2^(n-2*k) * binomial(n,k) * binomial(2*k,k) (0<=k<=n).at n=24A123516
• Regular triangle of certain polynomial expansion coefficients for the n-th power series.at n=41A355570