Coefficient of [x^(4*n+2)] in e.g.f. sin(cos(x) - cosh(x)).

A013470

Coefficient of [x^(4*n+2)] in e.g.f. sin(cos(x) - cosh(x)).

Terms

    a(0) =-2a(1) =118a(2) =-25202a(3) =7567558a(4) =2826256798

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