Strong Achilles numbers: Achilles numbers m such that phi(m) is also an Achilles number, where phi(m) denotes Euler's totient function of m.

A194085

Strong Achilles numbers: Achilles numbers m such that phi(m) is also an Achilles number, where phi(m) denotes Euler's totient function of m.

Terms

    a(0) =500a(1) =864a(2) =1944a(3) =2000a(4) =2592a(5) =3456a(6) =5000a(7) =10125a(8) =10368a(9) =12348a(10) =12500a(11) =16875a(12) =19652a(13) =19773a(14) =30375a(15) =31104a(16) =32000a(17) =33275a(18) =37044a(19) =40500a(20) =49392a(21) =50000a(22) =52488a(23) =55296a(24) =61731a(25) =64827a(26) =67500a(27) =69984a(28) =78608a(29) =80000

External references