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%I #17 Aug 13 2024 11:14:24
%S 3,4,7,10,19,21,24,25,28,33,39,43,52,57,58,60,64,67,70,72,75,79,82,85,
%T 87,88,93,96,99,102,114,115,123,126,129,133,135,136,141,144,145,147,
%U 148,150,156,159,163,166,169,171,184,193,196,198,199,204,205,207
%N Numbers k such that k prefixed by '7' and followed by '3' is prime.
%H Harvey P. Dale, <a href="/A032715/b032715.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Range[300],PrimeQ[FromDigits[Join[{7},IntegerDigits[#],{3}]]]&] (* _Harvey P. Dale_, Mar 31 2024 *)
%Y Cf. A032702-A032733.
%K nonn,base
%O 1,1
%A _Patrick De Geest_, May 15 1998
%E Offset changed by _Andrew Howroyd_, Aug 13 2024