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%I #7 Feb 25 2015 14:55:48
%S 1,2,6,14,35,97,264,727,2059,5876,16893,49085,143639,422764,1251642,
%T 3724276,11129680,33393998,100560903,303812039,920617337,2797335154,
%U 8521230447,26017690537,79610304979,244082395820,749739211746,2306942230064
%N (1/3)*s(n+3), where s = A025256.
%F G.f.: (1-x-x^2-6*x^3-sqrt(1-2*x-x^2-10*x^3+x^4))/x^3/6. - _Vladeta Jovovic_, May 07 2003
%F Conjecture: (n+3)*a(n) +(-2*n-3)*a(n-1) -n*a(n-2) +5*(-2*n+3)*a(n-3) +(n-3)*a(n-4)=0. - _R. J. Mathar_, Feb 25 2015
%K nonn
%O 1,2
%A _Clark Kimberling_
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