Expansion of e.g.f.: exp(sec(x)-exp(x))=1-x+1/2!*x^2-2/3!*x^3+9/4!*x^4-32/5!*x^5...

A013501

Expansion of e.g.f.: exp(sec(x)-exp(x))=1-x+1/2!*x^2-2/3!*x^3+9/4!*x^4-32/5!*x^5...

Terms

    a(0) =1a(1) =-1a(2) =1a(3) =-2a(4) =9a(5) =-32a(6) =157a(7) =-828a(8) =5481a(9) =-35496a(10) =290649a(11) =-2290840a(12) =22092829a(13) =-204459452a(14) =2273871485a(15) =-24119527604a(16) =303515669169

External references