Expansion of 2 * arccot(cos(x)).

A101923

Expansion of 2 * arccot(cos(x)).

Terms

    a(0) =1a(1) =2a(2) =1a(3) =-148a(4) =-3719a(5) =-20098a(6) =5055961a(7) =403644152a(8) =7831409041

External references