Numerator of [x^(2n+1)] in the Taylor expansion tan(cosec(x)-cot(x)).

A013519

Numerator of [x^(2n+1)] in the Taylor expansion tan(cosec(x)-cot(x)).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =181a(4) =59a(5) =3455a(6) =3332389a(7) =173339393a(8) =449509681a(9) =198232237033

External references