Numbers n such that if m = reverse(phi(n)) then n = reverse(phi(m)).

A251808

Numbers n such that if m = reverse(phi(n)) then n = reverse(phi(m)).

Terms

    a(0) =1a(1) =21a(2) =63a(3) =291a(4) =2744a(5) =2991a(6) =6102a(7) =6711a(8) =46676013a(9) =69460293a(10) =272543398a(11) =896172631

External references