Tan(sin(x)^2) = 2/2!*x^2 - 8/4!*x^4 + 272/6!*x^6 - 13568/8!*x^8 + ...

A009675

Tan(sin(x)^2) = 2/2!*x^2 - 8/4!*x^4 + 272/6!*x^6 - 13568/8!*x^8 + ...

Terms

    a(0) =0a(1) =2a(2) =-8a(3) =272a(4) =-13568a(5) =1048832a(6) =-128073728a(7) =21002749952

External references