sec(sec(x)*tan(x))=1+1/2!*x^2+25/4!*x^4+1177/6!*x^6+98705/8!*x^8...
A012799
sec(sec(x)*tan(x))=1+1/2!*x^2+25/4!*x^4+1177/6!*x^6+98705/8!*x^8...
Terms
- a(0) =1a(1) =1a(2) =25a(3) =1177a(4) =98705a(5) =13250769a(6) =2607761385a(7) =707007382057
External references
- oeis: A012799