A161443 - OEIS

%I #4 Jan 25 2018 09:55:04

%S 3,18,33,48,71,86,101,116,139,154,169,184,207,222,237,252,258,275,288,

%T 305,326,343,356,373,394,411,424,441,462,479,492,509,513,528,547,562,

%U 581,596,615,630,649,664,683,698,717,732,751,766,768,785,802,819,836

%N Numbers m such that A160700(m) = 3.

%H Charles R Greathouse IV, <a href="/A161443/b161443.txt">Table of n, a(n) for n = 1..10000</a>

%F 16n - 16 <= a(n) <= 16n - 1. - _Charles R Greathouse IV_, Jan 25 2018

%o (PARI) A160700(n)=my(t=n%16); while(n>15, n>>=4; t=bitxor(t, n%16)); t

%o a(n)=for(k=16*n-16, 16*n-1, if(a(k)==3, return(k))) \\ _Charles R Greathouse IV_, Jan 25 2018

%Y Cf. A161440, A161441, A161442, A161444, A161445, A161446, A161447, A161448, A161449, A161450, A161451, A161452, A161453, A161454, A161455.

%K nonn,easy

%O 1,1

%A _Reinhard Zumkeller_, Jun 10 2009