Numbers m such that A062401(m) = phi(sigma(m)) is increasing to a record value, i.e., A062401(m) represents a new peak, so that A062401(m) > A062401(k) for all k < m.
A065391
Numbers m such that A062401(m) = phi(sigma(m)) is increasing to a record value, i.e., A062401(m) represents a new peak, so that A062401(m) > A062401(k) for all k < m.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =8a(4) =9a(5) =16a(6) =32a(7) =36a(8) =64a(9) =100a(10) =144a(11) =256a(12) =324a(13) =400a(14) =576a(15) =900a(16) =1296a(17) =1600a(18) =2304a(19) =2916a(20) =3600a(21) =5184a(22) =8100a(23) =9216a(24) =11664a(25) =14400a(26) =20736a(27) =22500a(28) =25600a(29) =30276
External references
- oeis: A065391