

A066149


Primes with an odd number of 0's in binary expansion.


5



2, 5, 11, 13, 17, 23, 29, 37, 41, 47, 59, 61, 71, 83, 89, 101, 113, 131, 137, 151, 157, 167, 173, 179, 181, 191, 193, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 277, 281, 293, 311, 317, 337, 347, 349, 353, 359, 373, 383, 389, 401, 449, 461
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OFFSET

1,1


LINKS

Indranil Ghosh, Table of n, a(n) for n = 1..20000 (terms 1..1000 from T. D. Noe)


EXAMPLE

17 is in the sequence because 17 is a prime and 17 = 10001_2. '10001' has three 0's.  Indranil Ghosh, Feb 06 2017


MATHEMATICA

Select[ Prime[ Range[ PrimePi[ 1000 ] ] ], OddQ[ Count[ IntegerDigits[ #, 2 ], 0 ] ]& ]


PROG

(PARI) forprime(p=2, 10^3, if( #select(x>x==0, digits(p, 2))%2==1, print1(p, ", "))); \\ Joerg Arndt, Jun 16 2018


CROSSREFS

Cf. A066148, A027699, A027697.
Cf. A059009.
Sequence in context: A118753 A337649 A305033 * A215423 A019387 A019337
Adjacent sequences: A066146 A066147 A066148 * A066150 A066151 A066152


KEYWORD

nonn,easy,base


AUTHOR

R. K. Guy, Dec 13 2001


EXTENSIONS

More terms from Vladeta Jovovic and Klaus Brockhaus, Dec 13 2001


STATUS

approved



