E.g.f.: Sum_{n>=0} a(n) * (cos(n*x)-sin(n*x)) * x^n/n! = 1 + x.

A218798

E.g.f.: Sum_{n>=0} a(n) * (cos(n*x)-sin(n*x)) * x^n/n! = 1 + x.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =15a(4) =224a(5) =5665a(6) =215136a(7) =11466903a(8) =815542272a(9) =74626924833

External references