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A025187 a(n) = T(2n,n-1), where T is the array defined in A025177. 1

%I #9 Jul 28 2016 15:35:20

%S 1,3,16,84,459,2552,14378,81783,468622,2700926,15640800,90930523,

%T 530391615,3102491160,18192186330,106901798100,629361849402,

%U 3711413384462,21919199253088,129625701167820

%N a(n) = T(2n,n-1), where T is the array defined in A025177.

%F Conjecture: +12*n*(1573*n-2085)*(3*n-1)*(3*n+1)*a(n) +(259519*n^4-6550685*n^3+19840883*n^2-20466403*n+6720078)*a(n-1) -54*(2*n-3)*(63141*n^3-343882*n^2+645379*n-388606)*a(n-2) -324*(n-3)*(4693*n-5417)*(2*n-3)*(2*n-5)*a(n-3)=0. - _R. J. Mathar_, Feb 25 2015

%p A025187 := proc(n)

%p A025177(2*n+1,n) ;

%p end proc: # _R. J. Mathar_, Jul 28 2016

%K nonn

%O 1,2

%A _Clark Kimberling_

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)