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A095318
Primes in whose binary expansion the number of 1 bits is > 3 + number of 0 bits.
4
31, 47, 59, 61, 127, 191, 223, 239, 251, 367, 379, 383, 431, 439, 443, 463, 479, 487, 491, 499, 503, 509, 607, 631, 701, 719, 727, 733, 743, 751, 757, 761, 823, 827, 829, 859, 863, 877, 883, 887, 911, 919, 941, 947, 953, 967, 971, 983, 991
OFFSET
1,1
PROG
(PARI) B(x) = { nB = floor(log(x)/log(2)); b1 = 0; b0 = 0;
for(i = 0, nB, if(bittest(x, i), b1++; , b0++; ); );
if(b1 > (3+b0), return(1); , return(0); ); };
forprime(x = 2, 991, if(B(x), print1(x, ", "); ); );
\\ Washington Bomfim, Jan 12 2011
CROSSREFS
Complement of A095319 in A000040. Subset of A095314. Subset: A095322. Cf. also A095328.
Sequence in context: A219243 A046047 A014313 * A130096 A229624 A270781
KEYWORD
nonn,easy,base
AUTHOR
Antti Karttunen, Jun 04 2004
STATUS
approved