A173250 - OEIS

%I #3 Mar 30 2012 18:52:39

%S 1,9,21,27,33,49,51,57,63,69,87,91,93,99,117,121,129,141,147,153,169,

%T 171,183,187,189,201,213,217,219,231,247,253,259,261,267,273,297,301,

%U 303,321,327,339,343,357,363,369,387,391,399,411,423,429,447,451,453

%N Positive odd nonprimes of the form prime-10.

%e a(1)=1 because 11(prime)-10=1(positive odd nonprime); a(2)=9 because 19(prime)-10=9(positive odd nonprime).

%Y Cf. A000040, A141468, A164384.

%K nonn

%O 1,2

%A _Juri-Stepan Gerasimov_, Feb 14 2010

%E 343 inserted by _R. J. Mathar_, Feb 21 2010