Expansion of e.g.f.: cosh(arctan(x)*log(x+1))=1+12/4!*x^4-60/5!*x^5+90/6!*x^6-420/7!*x^7...

A012405

Expansion of e.g.f.: cosh(arctan(x)*log(x+1))=1+12/4!*x^4-60/5!*x^5+90/6!*x^6-420/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =12a(5) =-60a(6) =90a(7) =-420a(8) =15008a(9) =-149184a(10) =572040a(11) =-4263600a(12) =153746472a(13) =-2274880608a(14) =14574976416a(15) =-151922927520

External references