A168544 - OEIS

%I #2 Mar 30 2012 18:52:37

%S 1,6,9,15,21,30,36,51,54,69,75,90,96,99,114,120,135,141,156,174,210,

%T 216,231,261,285,300,309,321,330,405,411,414,429,441,510,516,525,531,

%U 546,576,615,639,645,651,639,645,651,660,714,726,741,744,804,810,834,849

%N The nonprime halfs of even single (or even isolated) numbers.

%Y Cf. A008486, A040040, A141468, A168497.

%K nonn

%O 1,2

%A _Juri-Stepan Gerasimov_, Nov 29 2009