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%I #19 Sep 08 2022 08:45:13
%S 0,1,2,2,10,6,42,22,170,86,682,342,2730,1366,10922,5462,43690,21846,
%T 174762,87382,699050,349526,2796202,1398102,11184810,5592406,44739242,
%U 22369622,178956970,89478486,715827882,357913942,2863311530,1431655766
%N Pair reversal of a Jacobsthal sequence.
%C Pair reversal of A078008.
%C a(n+1) - 2*a(n) = A000918(n) signed. - _Paul Curtz_, Jun 29 2008
%C Pisano period lengths: 1, 1, 6, 1, 4, 6, 6, 2, 18, 4, 10, 6, 12, 6, 12, 2, 8, 18, 18, 4, ... - _R. J. Mathar_, Aug 10 2012
%H Vincenzo Librandi, <a href="/A094359/b094359.txt">Table of n, a(n) for n = 0..1000</a>
%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (-1,4,4)
%F a(n) = 5*2^n/12 - 2(-1)^n/3 + (-2)^n/4.
%F G.f.: x*(1+3*x)/((1+x)*(1-4*x^2)).
%o (Magma) [5*2^n/12-2*(-1)^n/3+(-2)^n/4: n in [0..35]]; // _Vincenzo Librandi_, Aug 12 2011
%Y Cf. A084183, A094360.
%K easy,nonn
%O 0,3
%A _Paul Barry_, Apr 26 2004
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