A032725 - OEIS

%I #11 Aug 13 2024 11:13:40

%S 0,3,4,6,7,9,12,13,15,18,22,25,27,33,37,39,43,46,49,54,58,67,69,76,78,

%T 81,85,88,90,96,109,112,123,129,136,138,139,145,157,175,180,183,186,

%U 195,196,199,207,210,217,222,223,229,231,234,235,237,238,246,250,255

%N Numbers k such that k prefixed by '9' and followed by '7' 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 13 2024