arctanh(arctanh(x)*log(x+1))=2/2!*x^2-3/3!*x^3+16/4!*x^4-50/5!*x^5...

A012705

arctanh(arctanh(x)*log(x+1))=2/2!*x^2-3/3!*x^3+16/4!*x^4-50/5!*x^5...

Terms

    a(0) =0a(1) =0a(2) =2a(3) =-3a(4) =16a(5) =-50a(6) =608a(7) =-4284a(8) =53856a(9) =-517824a(10) =7607232a(11) =-100164240a(12) =1728315840a(13) =-28348912800a(14) =556461697920

External references