Expansion of e.g.f.: sec(log(x+1)-tanh(x))=1+3/4!*x^4-40/5!*x^5+250/6!*x^6-1008/7!*x^7...

A013292

Expansion of e.g.f.: sec(log(x+1)-tanh(x))=1+3/4!*x^4-40/5!*x^5+250/6!*x^6-1008/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =3a(5) =-40a(6) =250a(7) =-1008a(8) =6937a(9) =-107280a(10) =1460724a(11) =-16878400a(12) =198206107a(13) =-2751120216a(14) =45257093830a(15) =-796023874800

External references