-469733376

Appears in sequences

• a(n) = n! * [x^n] (tanh(x) + x*(2*x*tanh(x) - 1)*sech(x)^2)/8.at n=13A326718
• Triangle read by rows: T(n, k) = (-1)^(n - k) * binomial(n, k) * A000182(n).at n=30A326723