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a(n) = ceiling(n + log(n)).
6

%I #18 Jan 01 2024 02:24:13

%S 1,3,5,6,7,8,9,11,12,13,14,15,16,17,18,19,20,21,22,23,25,26,27,28,29,

%T 30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,

%U 53,54,55,56,57,58,60,61,62,63,64,65,66,67,68,69,70,71

%N a(n) = ceiling(n + log(n)).

%H Vincenzo Librandi, <a href="/A212450/b212450.txt">Table of n, a(n) for n = 1..1000</a>

%t Table[Ceiling[n + Log[n]], {n, 100}] (* _T. D. Noe_, May 21 2012 *)

%o (Magma) [Ceiling(n + Log(n)): n in [1..80]]; // _Vincenzo Librandi_, Feb 14 2013

%Y Cf. A000523, A062153, A102572, A212445, A212446, A212447, A212448, A212449, A212451, A212452, A212453, A212454.

%K nonn,easy

%O 1,2

%A _Mohammad K. Azarian_, May 17 2012