Expansion of e.g.f.: sec(arctanh(x)*log(x+1))=1+12/4!*x^4-60/5!*x^5+570/6!*x^6-3780/7!*x^7...

A012707

Expansion of e.g.f.: sec(arctanh(x)*log(x+1))=1+12/4!*x^4-60/5!*x^5+570/6!*x^6-3780/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =12a(5) =-60a(6) =570a(7) =-3780a(8) =46368a(9) =-471744a(10) =6857160a(11) =-89514480a(12) =1475800392a(13) =-23440985568a(14) =439465502112

External references