A177114 - OEIS

%I #13 Jul 31 2017 12:18:20

%S 4,364,3964,39964,399964,3999964,39999964,399999964,3999999964,

%T 39999999964,399999999964,3999999999964,39999999999964,

%U 399999999999964,3999999999999964,39999999999999964,399999999999999964

%N 4*(10^n-9).

%H Harvey P. Dale, <a href="/A177114/b177114.txt">Table of n, a(n) for n = 1..999</a>

%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (11,-10).

%F G.f. 4*x*(1+80*x) / ( (10*x-1)*(x-1) ). - R. J. Mathar, Aug 24 2011

%F a(n) = 4*A170955(n). - R. J. Mathar, Aug 24 2011

%t LinearRecurrence[{11, -10}, {4, 364}, 30] (* or *) Join[{4},Table[ 100*FromDigits[PadRight[{3},n,9]]+64,{n,30}]] (* _Harvey P. Dale_, Jul 31 2017 *)

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_