Carmichael numbers k for which bigomega(phi(k)) < bigomega(k-1), where bigomega gives the number of prime divisors, counted with multiplicity.

A339909

Carmichael numbers k for which bigomega(phi(k)) < bigomega(k-1), where bigomega gives the number of prime divisors, counted with multiplicity.

Terms

    a(0) =1729a(1) =14676481a(2) =84350561a(3) =90698401a(4) =279377281a(5) =382536001a(6) =413138881a(7) =542497201a(8) =702683101a(9) =781347841a(10) =851703301a(11) =939947009a(12) =955134181a(13) =3480174001a(14) =4765950001a(15) =5255104513a(16) =5781222721a(17) =5985964801a(18) =7558388641a(19) =7816642561a(20) =8714965001a(21) =9237473281a(22) =13630072501a(23) =18189007201a(24) =21669076801a(25) =21863001601a(26) =23915494401a(27) =25477682491

External references