A124169 Numbers in A055039 but not in A044075.

238, 494, 750, 910, 926, 942, 952, 958, 1006, 1262, 1518, 1774, 1934, 1950, 1966, 1976, 1982, 2030, 2286, 2542, 2798, 2958, 2974, 2990, 3000, 3006, 3054, 3310, 3566, 3598, 3614, 3630, 3640, 3646, 3662, 3678, 3694, 3704, 3710, 3726, 3742, 3758, 3768

Offset

1,1

Comments

Numbers whose base 4 representation ends in 3,2 followed by some number of zeros and includes at least one other 3,2. This means that, in spite of the initial terms, asymptotically most members of A055039 are not in A044075. In fact, A055039 has density 1/12, while A044075 has density zero. - Franklin T. Adams-Watters, Dec 04 2006

Links

R. J. Mathar, Table of n, a(n) for n=1..3449

Prog

(PARI) { hex14(n)=local(m); m=n; while(m, if(m%16==14, return(1)); m\=16); 0 }
for(n=1, 10^4, k=n; while(k%4==0, k\=4); if(k%16!=14, next); if(hex14(k-14)||hex14((k-14)\4), print1(n, ", ")) ) \\ Max Alekseyev, Dec 04 2006

Crossrefs

Sequence in context: A205068 A229077 A129124 * A264885 A252910 A252905

Adjacent sequences: A124166 A124167 A124168 * A124170 A124171 A124172

Keyword

nonn,base

Author

N. J. A. Sloane, Dec 04 2006

Extensions

More terms from Max Alekseyev and Klaus Brockhaus, Dec 04 2006

Status

approved