Expansion of e.g.f. sec(sin(x)*exp(x))=1+1/2!*x^2+6/3!*x^3+25/4!*x^4+140/5!*x^5...

A012293

Expansion of e.g.f. sec(sin(x)*exp(x))=1+1/2!*x^2+6/3!*x^3+25/4!*x^4+140/5!*x^5...

Terms

    a(0) =1a(1) =0a(2) =1a(3) =6a(4) =25a(5) =140a(6) =1177a(7) =10738a(8) =104977a(9) =1188120a(10) =15191889a(11) =211088350a(12) =3187087209a(13) =52357837220a(14) =926871127977

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