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%I #8 Feb 15 2014 20:20:19
%S 0,2,7,22,69,218,694,2224,7167,23204,75415,245878,803700,2632502,
%T 8637127,28376122,93326289,307205138,1011931354,3335118004,
%U 10996652127,36271055864,119668397395,394905999598,1303417073160,4302619498442
%N G.f.: x(2-5x-2x^2)/(1-6x+9x^2-x^4).
%F (1/2) [Lucas(2n-1) + A006190(n+1) ]. - _Ralf Stephan_, Jun 02 2007
%t v[1] = {0, 1, 1, 2}; v[n_] := v[n] = M.v[n - 1]; digits = 50; a = Table[v[n][[1]], {n, 1, digits}]
%Y Cf. A001906, A006190.
%K nonn
%O 0,2
%A _Roger L. Bagula_, May 29 2005
%E Edited by the Associate Editors of the OEIS, Apr 09 2009