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%I #11 Oct 08 2018 19:05:58
%S 1,8,107,654,2801,9859,30869,89951,250780,680665,1818310,4813018,
%T 12674542,33283434,87272241,228658744,598864479,1568137061,4105798635,
%U 10749568905,28143285770,73680744203,192899492252,505018380164,1322156411756,3461451749404
%N a(n) = T(2*n, n+2), T given by A027011.
%H Colin Barker, <a href="/A027013/b027013.txt">Table of n, a(n) for n = 2..1000</a>
%H <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (8,-26,45,-45,26,-8,1).
%F G.f.: x^2*(1+69*x^2-39*x^3+36*x^4-26*x^5+8*x^6-x^7) / ((1-x)^5*(1-3*x+x^2)). - _Colin Barker_, Feb 19 2016
%t LinearRecurrence[{8,-26,45,-45,26,-8,1},{1,8,107,654,2801,9859,30869,89951},30] (* _Harvey P. Dale_, Oct 08 2018 *)
%o (PARI) Vec(x^2*(1+69*x^2-39*x^3+36*x^4-26*x^5+8*x^6-x^7)/((1-x)^5*(1-3*x+x^2)) + O(x^40)) \\ _Colin Barker_, Feb 19 2016
%K nonn,easy
%O 2,2
%A _Clark Kimberling_