%I A005833
%S A005833 0,1,1,2,3,6,10,19,35,65,121,226,421,786,1467,2738,5111,
%T A005833 9541,17810,33247,62064,115858,216279,403741,753687,1406953,
%U A005833 2626444,4902941,9152616,17085741,31894984
%N A005833 a(n) = [ tau*a(n-2) ] + a(n-1).
%Y A005833 Sequence in context: A123916 A000693 A054178 this_sequence A001678 A113292 
               A050291
%Y A005833 Adjacent sequences: A005830 A005831 A005832 this_sequence A005834 A005835 
               A005836
%K A005833 nonn
%O A005833 0,4
%A A005833 N. J. A. Sloane (njas(AT)research.att.com).