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Squarefree numbers occurring more than once in A076734.
3

%I #4 Mar 30 2012 18:50:29

%S 6,10,26,30,51,66,70,78,102,122,130,154,165,174,177,182,190,210,222,

%T 238,246,266,273,282,285,291,310,318,330,345,357,362,366,370,390,399,

%U 406,418,426,429,438,455,462,483,510,518,530,533,534,546,555,561,570

%N Squarefree numbers occurring more than once in A076734.

%C A077618(a(n))>1;

%C Primorials are a subsequence, see A077622.

%Y Cf. A077619, A077620.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Nov 12 2002