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%I #6 Oct 06 2019 20:22:15
%S 11,101,191,211,461,821,1301,1481,1871,2081,3251,3331,3461,5501,5651,
%T 7741,9431,11731,13001,13691,15401,15641,15731,16061,16141,17191,
%U 18041,18251,18911,19421,20441,20731,21011,22271,23041,23831
%N Initial terms of '4-block' primes as described in A032591.
%Y Cf. A032591.
%K nonn
%O 0,1
%A _Patrick De Geest_, Apr 15 1998
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