E.g.f.: sech(log(x+1)-sinh(x))=1-3/4!*x^4+10/5!*x^5-100/6!*x^6+693/7!*x^7...

A013269

E.g.f.: sech(log(x+1)-sinh(x))=1-3/4!*x^4+10/5!*x^5-100/6!*x^6+693/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =-3a(5) =10a(6) =-100a(7) =693a(8) =-5383a(9) =47052a(10) =-404934a(11) =3834435a(12) =-36703359a(13) =357872502a(14) =-3463205876a(15) =30476792955a(16) =-198853998991a(17) =-654085861096

External references