A032704 - OEIS

%I #11 Aug 13 2024 11:48:54

%S 0,2,3,6,9,11,20,21,23,24,26,27,39,42,44,45,48,56,59,62,65,69,72,75,

%T 80,83,86,87,93,95,101,105,108,113,114,116,120,122,123,128,134,135,

%U 138,141,149,152,161,162,164,165,168,176,177,180,185,191,194,198,206

%N Numbers k such that k prefixed by '4' and followed by '1' is prime.

%Y Cf. A032702-A032733.

%K nonn,base

%O 1,2

%A _Patrick De Geest_, May 15 1998

%E Offset changed by _Andrew Howroyd_, Aug 11 2024