Expansion of e.g.f.: sech(log(x+1)-sin(x))=1-3/4!*x^4+30/5!*x^5-180/6!*x^6+1113/7!*x^7...

A013221

Expansion of e.g.f.: sech(log(x+1)-sin(x))=1-3/4!*x^4+30/5!*x^5-180/6!*x^6+1113/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =-3a(5) =30a(6) =-180a(7) =1113a(8) =-7959a(9) =54684a(10) =-326214a(11) =1420595a(12) =4070649a(13) =-267497802a(14) =5659842188a(15) =-96370811565

External references