A071853 - OEIS

%I #7 Mar 31 2012 13:50:44

%S 11,38,51,70,84,92,107,147,155,167,279,310,326,354,377,403,469,475,

%T 489,534,588,607,619,669,685,687,710,783,805,820,848,898,947,1010,

%U 1101,1207,1332,1467,1481,1520,1556,1578,1738,1744,1796,1802

%N Numbers n such that for any x, C(2x,x) never has n distinct prime factors.

%F n such that Card ( x : A067434(x) = n ) = 0

%K nonn

%O 1,1

%A _Benoit Cloitre_, Jun 09 2002

%E More terms from _Naohiro Nomoto_, Jun 16 2002