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%I #7 Mar 09 2015 09:35:18
%S 37,59,1721,2731,3539,3943,4549,4751,6367,6569,8387,9397,99103,113117,
%T 123127,147151,149153,173177,185189,203207,209213,213217,219223,
%U 227231,239243,249253,255259,263267,267271,285289,287291
%N Primes that are concatenations of n with n + 4.
%Y Cf. A032609, A032619.
%K nonn,base
%O 1,1
%A _Patrick De Geest_, May 15 1998
%E Edited by _Charles R Greathouse IV_, Apr 28 2010
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