exp(cosh(x)*arctan(x))=1+x+1/2!*x^2+2/3!*x^3+5/4!*x^4+20/5!*x^5...

A012768

exp(cosh(x)*arctan(x))=1+x+1/2!*x^2+2/3!*x^3+5/4!*x^4+20/5!*x^5...

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =20a(6) =85a(7) =16a(8) =-887a(9) =14096a(10) =145865a(11) =-887456a(12) =-14963507a(13) =126998976a(14) =2554796829a(15) =-21834514688a(16) =-556819358703

External references