A065564 - OEIS

%I #14 Dec 09 2024 22:03:55

%S 4,13,18,20,21,23,24,34,44,45,49,56,60,63,65,66,67,79,81,83,85,88,94,

%T 102,107,109,119,125,126,129,131,132,133,135,138,139,144,161,162,164,

%U 172,174,175,190,194,199,204,217,218,233,234,240,249,250,253,255,258

%N Numbers k such that floor((4/3)^(k+1))/floor((4/3)^k) = 4/3.

%H Harry J. Smith, <a href="/A065564/b065564.txt">Table of n, a(n) for n = 1..1000</a>

%F Lim_{n->infinity} a(n)/n = 4?

%o (PARI) isok(k) = { my(f=4/3); floor(f^(k + 1))/floor(f^k) == f } \\ _Harry J. Smith_, Oct 22 2009

%Y Cf. A064628, A065554.

%K nonn

%O 1,1

%A _Benoit Cloitre_, Nov 30 2001

%E a(55)-a(57) corrected by _Harry J. Smith_, Oct 22 2009