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A092100 Smallest number of 1's in binary representations of primes between 2^n and 2^(n+1) is 4. 2

%I #8 Jul 21 2015 00:30:42

%S 25,32,40,43,48,56,58,64,96,104,112,120,128,134,140,145,152,160,176,

%T 185,192,208,212,224,235,240,244,248,252,256,264,272,280,286,288,292,

%U 302,304,308,320,326,332,348,356,360,384,392,394,400

%N Smallest number of 1's in binary representations of primes between 2^n and 2^(n+1) is 4.

%C Where 4 appears in A091935.

%C This sequence differs from multiples of 8 (A008590) very little but significantly; even fewer are odd.

%C Essentially the same as A081504. - _R. J. Mathar_, Sep 08 2008

%t Compute the second line of the Mathematica code for A091936, then Do[ If[ Count[ IntegerDigits[ f[n], 2], 1] == 4, Print[n]], {n, 1, 400}] (* _Robert G. Wilson v_, Feb 19 2004 *)

%Y Cf. A091935, A091936.

%K nonn

%O 1,1

%A _Robert G. Wilson v_, Feb 19 2004

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Last modified July 26 06:58 EDT 2024. Contains 374615 sequences. (Running on oeis4.)