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%I #12 Mar 08 2021 12:06:41
%S 1,1,26,76,776,3376,25376,131776,872576,4907776,30757376,179301376,
%T 1096779776,6496792576,39316299776,234555621376,1412702437376,
%U 8454739787776,50814338072576,304542431051776,1828628975845376
%N a(n) = (6^n + (-4)^n)/2.
%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,24).
%F a(n) = (6^n + (-4)^n)/2.
%F G.f.: (1-x)/((1+4x)(1-6x)).
%F E.g.f.: (exp(6x) + exp(-4x))/2.
%t LinearRecurrence[{2,24},{1,1},30] (* _Harvey P. Dale_, Nov 29 2017 *)
%Y Cf. A083579. First differences of A051958.
%K easy,nonn
%O 0,3
%A _Paul Barry_, Apr 30 2003
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