sec(arcsinh(x)*log(x+1))=1+12/4!*x^4-60/5!*x^5+210/6!*x^6-1260/7!*x^7...

A012582

sec(arcsinh(x)*log(x+1))=1+12/4!*x^4-60/5!*x^5+210/6!*x^6-1260/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =12a(5) =-60a(6) =210a(7) =-1260a(8) =21168a(9) =-260064a(10) =2442120a(11) =-26091120a(12) =411273192a(13) =-6914670048a(14) =106449907200

External references