sec(sec(x)*arcsin(x))=1+1/2!*x^2+21/4!*x^4+885/6!*x^6+67753/8!*x^8...

A012793

sec(sec(x)*arcsin(x))=1+1/2!*x^2+21/4!*x^4+885/6!*x^6+67753/8!*x^8...

Terms

    a(0) =1a(1) =1a(2) =21a(3) =885a(4) =67753a(5) =8319945a(6) =1497879933a(7) =371676224829

External references