sec(sinh(x)*exp(x))=1+1/2!*x^2+6/3!*x^3+33/4!*x^4+220/5!*x^5...

A012522

sec(sinh(x)*exp(x))=1+1/2!*x^2+6/3!*x^3+33/4!*x^4+220/5!*x^5...

Terms

    a(0) =1a(1) =0a(2) =1a(3) =6a(4) =33a(5) =220a(6) =1857a(7) =18578a(8) =210497a(9) =2666808a(10) =37529089a(11) =581350110a(12) =9823649121a(13) =179778809236

External references