sec(log(x+1)-arctanh(x))=1+3/4!*x^4+90/6!*x^6+5145/8!*x^8...
A013303
sec(log(x+1)-arctanh(x))=1+3/4!*x^4+90/6!*x^6+5145/8!*x^8...
Terms
- a(0) =1a(1) =0a(2) =3a(3) =90a(4) =5145a(5) =472500a(6) =63877275a(7) =11947285350
External references
- oeis: A013303