sec(log(x+1)-arcsinh(x))=1+3/4!*x^4-30/5!*x^5+180/6!*x^6-945/7!*x^7...

A013280

sec(log(x+1)-arcsinh(x))=1+3/4!*x^4-30/5!*x^5+180/6!*x^6-945/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =3a(5) =-30a(6) =180a(7) =-945a(8) =7665a(9) =-94500a(10) =1124550a(11) =-12525975a(12) =156808575a(13) =-2347294950a(14) =37345908600a(15) =-602685208125

External references