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A061140 Number of degree-n odd permutations of order exactly 8. 5

%I #4 May 10 2013 12:44:45

%S 0,0,0,0,0,0,0,0,5040,45360,226800,831600,9979200,103783680,

%T 2058376320,23870246400,265686220800,2477893017600,47031546481920,

%U 656384611034880,11972743148620800,165640695384729600,1969108505560627200

%N Number of degree-n odd permutations of order exactly 8.

%F E.g.f.: - 1/2*exp(x + 1/2*x^2 + 1/4*x^4) + 1/2*exp(x - 1/2*x^2 - 1/4*x^4) + 1/2*exp(x + 1/2*x^2 + 1/4*x^4 + 1/8*x^8) - 1/2*exp(x - 1/2*x^2 - 1/4*x^4 - 1/8*x^8).

%Y Cf. A000085, A001470, A001472, A052501, A053496 - A053505, A001189, A001471, A001473, A061121 - A061128, A000704, A061129 - A061132, A048099, A051695, A061133 - A061135.

%K easy,nonn

%O 0,9

%A _Vladeta Jovovic_, Apr 14 2001

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