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%I #10 Sep 08 2022 08:45:17
%S 3,4,5,6,6,7,7,8,8,8,9,9,10,10,10,11,11,11,11,12,12,12,13,13,13,13,14,
%T 14,14,14,14,15,15,15,15,16,16,16,16,16,17,17,17,17,17,18,18,18,18,18,
%U 18,19,19,19,19,19,19,20,20,20,20,20,20,21,21,21,21,21,21,21,22,22,22
%N a(n) = ceiling(sqrt(2*Pi*n)).
%H G. C. Greubel, <a href="/A104136/b104136.txt">Table of n, a(n) for n = 1..10000</a>
%t Ceiling[Sqrt[2Pi*Range[80]]] (* _Harvey P. Dale_, Jun 13 2015 *)
%o (PARI) vector(80, n, ceil(sqrt(2*Pi*n))) \\ _G. C. Greubel_, Oct 01 2018
%o (Magma) R:=RealField(10); [Ceiling(Sqrt(2*Pi(R)*n)): n in [1..80]]; // _G. C. Greubel_, Oct 01 2018
%Y Cf. A104135 (with floor).
%K nonn
%O 1,1
%A Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Mar 07 2005
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