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%I #7 Nov 03 2016 06:10:47
%S 1,121,12421,1246421,124696421,12470296421,1247037296421,
%T 124703817296421,12470382717296421,1247038282717296421,
%U 124703828392717296421,12470382840592717296421,1247038284073592717296421,124703828407513592717296421,12470382840753013592717296421
%N a(n) = 10*a(n-1) + A109242(n).
%H Colin Barker, <a href="/A180153/b180153.txt">Table of n, a(n) for n = 1..500</a>
%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (121,-2220,12100,-10000).
%F From _Colin Barker_, Oct 03 2015: (Start)
%F a(n) = 121*a(n-1)-2220*a(n-2)+12100*a(n-3)-10000*a(n-4) for n>4.
%F G.f.: x / ((x-1)*(10*x-1)^2*(100*x-1)).
%F (End)
%o (PARI) Vec(x / ((x-1)*(10*x-1)^2*(100*x-1)) + O(x^30)) \\ _Colin Barker_, Oct 03 2015
%Y Cf. A109242, A000292, A002620, A059259, A094028.
%K nonn,easy
%O 1,2
%A _Mark Dols_, Aug 13 2010