E.g.f.: cosh(log(x+1)-arctan(x))=1+3/4!*x^4-40/5!*x^5+250/6!*x^6-840/7!*x^7...

A013255

E.g.f.: cosh(log(x+1)-arctan(x))=1+3/4!*x^4-40/5!*x^5+250/6!*x^6-840/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =3a(5) =-40a(6) =250a(7) =-840a(8) =4725a(9) =-97200a(10) =1188900a(11) =-7994800a(12) =66364375a(13) =-1544127000a(14) =26899674750a(15) =-278709795000

External references