Expansion of e.g.f. 1/( cos(arctanh(x)) - sin(arctanh(x)) ).

A184972

Expansion of e.g.f. 1/( cos(arctanh(x)) - sin(arctanh(x)) ).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =13a(4) =81a(5) =605a(6) =5595a(7) =59225a(8) =725985a(9) =9928505a(10) =151720275a(11) =2541096325a(12) =46541735025a(13) =922017392725

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