%I #2 Mar 30 2012 17:34:28
%S 0,1,7,183,1190,30941,201117,5229043,33988780,883708281,5744103827,
%T 149346699503,970753546770,25239592216021,164057349404137,
%U 4265491084507563,27725692049299160,720867993281778161
%N a(n)=(13^n - 1)/(3*2^(3 - Mod[n, 2])).
%t a[n_] := (13^n - 1)/(3*2^(3 - Mod[n, 2]));
%t Table[a[n], {n, 0, 30}]
%K nonn
%O 0,3
%A _Roger L. Bagula_, Dec 04 2008
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