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Indices of primefree generations.
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%I #10 Jun 19 2021 02:42:31

%S 9,11,17,18,21,22,23,24,29,32,33,35,36,38,39,40,48,49,50,54,56,57,58,

%T 65,66,67,69,70,72,74,76,77,78,79,81,83,85,86,88,89,91,93,95,96,97,99,

%U 100,101,106,107,108,110,111,113,114,115,121,125,126,128,129

%N Indices of primefree generations.

%Y For "Generations" see A048448-A048455. See also A047844.

%K nonn

%O 1,1

%A _Patrick De Geest_, May 15 1999

%E More terms from _Sean A. Irvine_, Jun 18 2021