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A293332 Least integer k such that k/2^n > sqrt(5). 4

%I

%S 3,5,9,18,36,72,144,287,573,1145,2290,4580,9159,18318,36636,73272,

%T 146543,293086,586172,1172344,2344688,4689375,9378749,18757498,

%U 37514996,75029991,150059982,300119964,600239928,1200479855,2400959709,4801919418,9603838835

%N Least integer k such that k/2^n > sqrt(5).

%H Clark Kimberling, <a href="/A293332/b293332.txt">Table of n, a(n) for n = 0..1000</a>

%F a(n) = ceiling(r*2^n), where r = sqrt(5).

%F a(n) = A293331(n) + 1.

%t z = 120; r = Sqrt[5];

%t Table[Floor[r*2^n], {n, 0, z}]; (* A293331 *)

%t Table[Ceiling[r*2^n], {n, 0, z}]; (* A293332 *)

%t Table[Round[r*2^n], {n, 0, z}]; (* A293333 *)

%Y Cf. A001633, A293331, A293333.

%K nonn,easy

%O 0,1

%A _Clark Kimberling_, Oct 10 2017

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Last modified September 29 04:22 EDT 2020. Contains 337420 sequences. (Running on oeis4.)