%I A053730
%S A053730 1,2,6,20,64,192,544,1472,3840,9728,24064,58368,139264,327680,761856,
%T A053730 1753088,3997696,9043968,20316160,45350912,100663296,222298112,
%U A053730 488636416,1069547520,2332033024,5066719232,10972299264,23689428992
%N A053730 2^(n-2)*(n^2-n+4).
%Y A053730 Cf. A053545.
%Y A053730 Sequence in context: A057766 A132353 A052958 this_sequence A005726 A148473 
               A000718
%Y A053730 Adjacent sequences: A053727 A053728 A053729 this_sequence A053731 A053732 
               A053733
%K A053730 nonn
%O A053730 0,2
%A A053730 N. J. A. Sloane (njas(AT)research.att.com), Mar 24 2000