%I #6 Mar 30 2012 17:38:29
%S 2,10,51,261,1336,6839,35009,179212,917391,4696149,24039712,123059927,
%T 629947049,3224715748,16507405935,84501851325,432567231064,
%U 2214323194775,11335179502289,58025086244092
%N a(n) = 5*a(n-1) + a(n-2) - 2*a(n-3).
%D R. K. Guy, personal communication.
%F O.g.f.: (2-x^2)/(1-5x-x^2+2x^3). [From _R. J. Mathar_, Aug 22 2008]
%K nonn
%O 0,1
%A _N. J. A. Sloane_.
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