A095078 - OEIS

A095078

Primes with a single 0 bit in their binary expansion.

2, 5, 11, 13, 23, 29, 47, 59, 61, 191, 223, 239, 251, 383, 479, 503, 509, 991, 1019, 1021, 2039, 3583, 3967, 4079, 4091, 4093, 6143, 15359, 16127, 16319, 16381, 63487, 65407, 65519, 129023, 131063, 245759, 253951, 261631, 261887, 262079

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OFFSET

1,1

COMMENTS

Except for the first value 2, the sequence gives the primes of the form 2^k -2^j -1 with 0 < j < k-1. If j=k-1 we obtain the Mersenne primes. - Pierre CAMI, May 19 2005

LINKS

T. D. Noe, Table of n, a(n) for n=1..1000

A. Karttunen and J. Moyer, C-program for computing the initial terms of this sequence

MATHEMATICA

Select[Prime[Range[23000]], DigitCount[#, 2, 0]==1&] (* Harvey P. Dale, Nov 28 2019 *)

PROG

(PARI)forprime(p=2, 262079, v=binary(p); s=0; for(k=1, #v, s+=v[k]); if(#v-s==1, print1(p, ", "))) \\ Washington Bomfim, Jan 13 2011

CROSSREFS

Intersection of A000040 and A030130. Cf. A095058.

Sequence in context: A086081 A345707 A113305 * A335874 A062572 A215214

Adjacent sequences: A095075 A095076 A095077 * A095079 A095080 A095081

KEYWORD

nonn,base,easy

AUTHOR

Antti Karttunen, Jun 01 2004

STATUS

approved