%I #9 Dec 16 2018 06:40:39

%S 15,39,55,87,95,111,143,159,183,295,303,319,335,407,415,447,519,535,

%T 543,551,583,591,655,695,767,807,815,879,895,951,1007,1047,1055,1079,

%U 1119,1135,1167,1263,1383,1391,1527,1623,1639,1671,1703,1711,1735,1839,1895,1903,1919,1943

%N Composite numbers c for which A064287((c-1)/2)=1.

%C Is there an n for which A006694((a(n)-1)/2) is not equal to 4?

%Y Cf. A064287, A006694, A001122.

%K nonn

%O 1,1

%A _Vladimir Shevelev_, Jun 01 2008

%E More terms (using A064287 b-file) from _Michel Marcus_, Dec 16 2018