%I #13 Sep 08 2022 08:45:59
%S 0,1,1,1,2,2,2,2,3,3,3,3,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,8,8,8,9,9,9,9,
%T 10,10,10,10,11,11,11,11,12,12,12,13,13,13,13,14,14,14,14,15,15,15,16,
%U 16,16,16,17,17,17,17,18,18,18,18,19,19,19,20,20,20,20,21,21,21
%N a(n) = 2*n - floor(n*sqrt(3)).
%H Vincenzo Librandi, <a href="/A195120/b195120.txt">Table of n, a(n) for n = 0..10000</a>
%F a(n) = 2*n-A022838(n). - _R. J. Mathar_, Mar 20 2022
%o (Magma) [2*n-Floor(n*Sqrt(3)): n in [0..70]]; // _Vincenzo Librandi_, Sep 12 2011
%K nonn
%O 0,5
%A _Clark Kimberling_, Sep 09 2011
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