-4765

Appears in sequences

• Expansion of e.g.f. tanh(arcsin(x) + log(x+1)).at n=7A012906
• Array A(i,j) read by antidiagonals: A(i,j) is the (2i-1)-th derivative of sin(sin(sin(...sin(x)))) nested j times evaluated at 0.at n=31A212261
• a(n) = Sum_{k=1..n} (-k)^(floor(n/k) - 1).at n=24A345037