870640

Appears in sequences

• Coefficients of elliptic function cn.at n=3A006089
• 1 + Sum_{n >= 1} Sum_{k = 0..n-1} (-1)^n*T(n,k)*y^(2*k)*x^(2*n)/(2*n)! = JacobiCN(x,y).at n=17A060627