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%I #13 Dec 27 2023 08:31:40
%S 6,7,8,0,1,2,3,4,5,15,16,17,9,10,11,12,13,14,24,25,26,18,19,20,21,22,
%T 23,33,34,35,27,28,29,30,31,32,42,43,44,36,37,38,39,40,41,51,52,53,45,
%U 46,47,48,49,50,60,61,62,54
%N Tersum n + 6.
%H <a href="/index/Rec#order_08">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1,-1,2,-1,-1,2,-1).
%F Tersum m + n : write m and n in base 3 and add mod 3 with no carries, e.g. 5 + 8 = "21" + "22" = "10" = 1.
%F G.f.: (6 - 5*x - 3*x^3 + 4*x^4 - 3*x^6 + 4*x^7)/((-1+x)^2*(1+x^3+x^6)). - _Jinyuan Wang_, Mar 10 2020
%K nonn
%O 0,1
%A _N. J. A. Sloane_
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