1311379

Appears in sequences

• Sum(a(n)*x^n/n!) = exp(sinh(sinh(x))).at n=11A009220
• Square array read by descending antidiagonals: (-1)^n*T(n,k)/n! is the coefficient of x^(2*n+1) in the Taylor expansion of the k-th iteration of sin(x).at n=41A366834