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Round(n*sqrt(12)).
3

%I #8 Sep 08 2022 08:45:59

%S 0,3,7,10,14,17,21,24,28,31,35,38,42,45,48,52,55,59,62,66,69,73,76,80,

%T 83,87,90,94,97,100,104,107,111,114,118,121,125,128,132,135,139,142,

%U 145,149,152,156,159,163,166,170,173,177,180,184,187

%N Round(n*sqrt(12)).

%H Vincenzo Librandi, <a href="/A198268/b198268.txt">Table of n, a(n) for n = 0..10000</a>

%o (Magma) [Round(n*Sqrt(12)): n in [0..60]]

%Y Cf. A047355, A194028.

%K nonn,easy

%O 0,2

%A _Vincenzo Librandi_, Oct 24 2011