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%I #5 Jan 07 2016 16:48:23
%S 1,6,-24,156,-924,5556,-33324,199956,-1199724,7198356,-43190124,
%T 259140756,-1554844524,9329067156,-55974402924,335846417556,
%U -2015078505324,12090471031956,-72542826191724,435256957150356
%N a(n)=(6/7)*(2+5*(-6)^(n-1)).
%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (-5,6).
%F a(n)=(-6)*a(n-1)+12 with a(0)=1. a(0)=1, a(1)=6, a(n)=6*a(n-2)-5*a(n-1). G.f.: (1+11x)/(1+5x-6x^2). a(n)= Sum_{k, 0<=k<=n} A112555(n,k)*5^(n-k).
%t LinearRecurrence[{-5,6},{1,6},20] (* _Harvey P. Dale_, Jan 07 2016 *)
%K sign
%O 0,2
%A _Philippe Deléham_, Sep 23 2009
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