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%I #23 Mar 17 2024 02:12:17
%S 6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,
%T 30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,6,30,
%U 6,30
%N Period 2: repeat 6,30.
%C Continued fraction expansion of (15+sqrt(230))/5. - _Klaus Brockhaus_, Apr 28 2010
%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0,1).
%F From _Philippe Deléham_, Sep 27 2009: (Start)
%F G.f.: 6x(1+5x)/((1-x)(1+x)).
%F a(n) = 6*A010686(n-1). (End)
%t PadRight[{},120,{6,30}] (* _Harvey P. Dale_, Jun 03 2019 *)
%o (PARI) a(n)=30-n%2*24 \\ _Charles R Greathouse IV_, Jun 02 2011
%Y Cf. A124886, A002445, A040214.
%K nonn,easy
%O 1,1
%A _Paul Curtz_, Sep 25 2009
%E Edited by _N. J. A. Sloane_, Sep 25 2009
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