Numbers n such that phi(n) = phi(n+12) and n is not divisible by 2.

Terms

a(0) =143a(1) =157a(2) =203a(3) =247a(4) =273a(5) =1147a(6) =1209a(7) =1679a(8) =2147a(9) =2279a(10) =2375a(11) =2445a(12) =2705a(13) =2747a(14) =4331a(15) =4687a(16) =5049a(17) =6107a(18) =7367a(19) =7835a(20) =7869a(21) =7979a(22) =7991a(23) =9167a(24) =12127a(25) =17145a(26) =18501a(27) =18753a(28) =18981a(29) =19803