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A161397 a(n) = the smallest positive integer that contains the same number of (non-leading) 0's as n when a(n) and n are written in binary, is not coprime to n, and is not a divisor of n. 2

%I

%S 6,15,10,30,14,63,18,12,4,55,9,247,6,63,34,85,8,57,8,9,4,253,18,10,4,

%T 6,10,1015,14,1023,66,36,16,20,16,185,8,9,16,205,8,215,8,10,4,14335,

%U 33,35,8,9,8,159,4,30,18,9,4,767,9,4087,6,15,130,80,32,201,32,33,16,213,32,730

%N a(n) = the smallest positive integer that contains the same number of (non-leading) 0's as n when a(n) and n are written in binary, is not coprime to n, and is not a divisor of n.

%H H. v. Eitzen, <a href="/A161397/b161397.txt">Table of n, a(n) for n = 2..10000</a>.

%Y Cf. A145257, A161396.

%K base,nonn

%O 2,1

%A _Leroy Quet_, Jun 09 2009

%E a(1) is undefined; offset corrected by _Hagen von Eitzen_, Jun 20 2009

%E Corrected and extended using terms from b-file. - _N. J. A. Sloane_, Aug 31 2009

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Last modified September 25 23:09 EDT 2021. Contains 347664 sequences. (Running on oeis4.)