login
Numbers that cannot be part of the trajectory of any number under repeated application of the map: n -> n + second-smallest number that does not divide n, unless they are the first term of the trajectory.
9

%I #2 Mar 31 2012 20:02:06

%S 1,2,3,5,12,15,17,24,27,29,35,36,39,41,45,48,51,53,60,63,65,72,75,77,

%T 84,87,89,95,96,99,101,105,108,111,113,120,123,125,132,135,137,144,

%U 147,149,155,156,159,161,165,168,171,173,180,183,185,192,195

%N Numbers that cannot be part of the trajectory of any number under repeated application of the map: n -> n + second-smallest number that does not divide n, unless they are the first term of the trajectory.

%Y Cf. A140485-A140488.

%K nonn

%O 1,2

%A _Jacques Tramu_, Jun 25 2008