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A061128 Number of degree-n permutations of order exactly 30. 23

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

%S 0,0,0,0,0,0,0,0,0,120960,2661120,27941760,536215680,6901614720,

%T 90084234240,1540714855680,33110649411840,554845922991360,

%U 8393918663370240,141081442901118720,2869353360741853440

%N Number of degree-n permutations of order exactly 30.

%F E.g.f.: - exp(x) + exp(x + 1/2*x^2) + exp(x + 1/3*x^3) + exp(x + 1/5*x^5) - exp(x + 1/2*x^2 + 1/3*x^3 + 1/6*x^6) - exp(x + 1/2*x^2 + 1/5*x^5 + 1/10*x^10) - exp(x + 1/3*x^3 + 1/5*x^5 + 1/15*x^15) + exp(x + 1/2*x^2 + 1/3*x^3 + 1/5*x^5 + 1/6*x^6 + 1/10*x^10 + 1/15*x^15 + 1/30*x^30).

%Y Cf. A000085, A001470, A001472, A052501, A053496 - A053505, A001189, A001471, A001473, A061121 - A061128.

%K easy,nonn

%O 1,10

%A _Vladeta Jovovic_, Apr 14 2001

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Last modified April 18 16:22 EDT 2024. Contains 371780 sequences. (Running on oeis4.)