Expansion of e.g.f.: sech(arcsinh(x)*log(x+1))=1-12/4!*x^4+60/5!*x^5-210/6!*x^6...

A012583

Expansion of e.g.f.: sech(arcsinh(x)*log(x+1))=1-12/4!*x^4+60/5!*x^5-210/6!*x^6...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =-12a(5) =60a(6) =-210a(7) =1260a(8) =-4368a(9) =-42336a(10) =833880a(11) =-9944880a(12) =109031208a(13) =-998835552a(14) =5256888000a(15) =57628902240

External references