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Round(n*sqrt(13)).
1

%I #10 Sep 08 2022 08:45:59

%S 0,4,7,11,14,18,22,25,29,32,36,40,43,47,50,54,58,61,65,69,72,76,79,83,

%T 87,90,94,97,101,105,108,112,115,119,123,126,130,133,137,141,144,148,

%U 151,155,159,162,166,169,173,177,180,184,187,191

%N Round(n*sqrt(13)).

%H Vincenzo Librandi, <a href="/A198271/b198271.txt">Table of n, a(n) for n = 0..10000</a>

%t Round[Sqrt[13]Range[0,60]] (* _Harvey P. Dale_, Mar 25 2016 *)

%o (Magma) [Round(n*Sqrt(13)): n in [0..60]]

%Y Cf. A171983.

%K nonn,easy

%O 0,2

%A _Vincenzo Librandi_, Oct 24 2011