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

A099612

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =2a(6) =61a(7) =17a(8) =277a(9) =62a(10) =50521a(11) =1382a(12) =540553a(13) =21844a(14) =199360981a(15) =929569a(16) =3878302429a(17) =6404582a(19) =443861162a(21) =18888466084a(23) =113927491862

External references