cos(arcsinh(x)+arcsin(x))=1-4/2!*x^2+16/4!*x^4-280/6!*x^6+8320/8!*x^8...

A013089

cos(arcsinh(x)+arcsin(x))=1-4/2!*x^2+16/4!*x^4-280/6!*x^6+8320/8!*x^8...

Terms

    a(0) =1a(1) =-4a(2) =16a(3) =-280a(4) =8320a(5) =-628000a(6) =51414400a(7) =-8930646400

External references