Denominators of the coefficients in the Taylor expansion of sec(x) + tan(x) around x=0.

A099617

Denominators of the coefficients in the Taylor expansion of sec(x) + tan(x) around x=0.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =24a(5) =15a(6) =720a(7) =315a(8) =8064a(9) =2835a(10) =3628800a(11) =155925a(12) =95800320a(13) =6081075a(14) =87178291200a(15) =638512875a(17) =10854718875

External references