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A168252 Numbers n such that n is squarefree and n is non-single or nonisolated. 1

%I #4 May 01 2013 21:02:10

%S 1,3,5,7,10,11,13,14,15,17,19,21,22,26,29,31,33,34,35,38,39,41,43,46,

%T 51,55,57,58,59,61,62,65,66,69,70,71,73,74,77,78,82,85,86,87,91,93,94,

%U 95,101,103,105,106,107,109,110,111,114,115,118,119,122,123,129,130,133

%N Numbers n such that n is squarefree and n is non-single or nonisolated.

%F A005117 INTERSECT A167707. [From _R. J. Mathar_, Apr 24 2010]

%Y Cf. A000469 (nonprime squarefree numbers), A005117 (squarefree numbers), A120944 (composite squarefree numbers), A167707 (non-single or nonisolated numbers).

%K nonn

%O 1,2

%A _Juri-Stepan Gerasimov_, Nov 21 2009

%E Edited by _N. J. A. Sloane_, Jan 23 2010

%E Corrected (114 inserted) by _R. J. Mathar_, Apr 24 2010

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)