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 A175268 a(n)=floor(2^sqrt(n)). 1

%I

%S 1,2,2,3,4,4,5,6,7,8,8,9,11,12,13,14,16,17,18,20,22,23,25,27,29,32,34,

%T 36,39,41,44,47,50,53,56,60,64,67,71,75,80,84,89,94,99,104,110,115,

%U 121,128,134,141,148,155,162,170,178,187,196,205,214,224,234,245,256,267

%N a(n)=floor(2^sqrt(n)).

%e a(0)=floor(2^sqrt(0))=floor(2^0)=1,

%e a(1)=floor(2^sqrt(1))=floor(2)=2,

%e a(2)=floor(2^sqrt(2))=floor(2.665)=2.

%t Floor[2^Sqrt[Range[0,70]]] (* _Harvey P. Dale_, Aug 03 2016 *)

%Y Cf. A134886 a(n)=floor(n^sqrt(2)).

%K nonn

%O 0,2

%A _Zak Seidov_, Mar 18 2010

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Last modified June 22 06:23 EDT 2021. Contains 345371 sequences. (Running on oeis4.)