Composite numbers k such that phi(k + d(k)) = phi(k) + d(k), where phi() = A000010(), d() = A000005().

A063702

Composite numbers k such that phi(k + d(k)) = phi(k) + d(k), where phi() = A000010(), d() = A000005().

Terms

    a(0) =24a(1) =42a(2) =56a(3) =98a(4) =102a(5) =230a(6) =248a(7) =264a(8) =294a(9) =468a(10) =638a(11) =1014a(12) =1016a(13) =1078a(14) =2006a(15) =8366a(16) =10344a(17) =11914a(18) =11918a(19) =13158a(20) =15694a(21) =19942a(22) =23318a(23) =24734a(24) =33496a(25) =39348a(26) =57352a(27) =65528a(28) =79826a(29) =119799

External references