Numbers n such that uphi(n) = uphi(n+2) - uphi(n+1), where uphi is the unitary totient function (A047994).

A298762

Numbers n such that uphi(n) = uphi(n+2) - uphi(n+1), where uphi is the unitary totient function (A047994).

Terms

    a(0) =1a(1) =2a(2) =5a(3) =21a(4) =9177a(5) =244965a(6) =14307854a(7) =24571869a(8) =128199057a(9) =140830365a(10) =401767629a(11) =420567854a(12) =468190437a(13) =525970977a(14) =780768165a(15) =886434645a(16) =1597167645a(17) =4046753949a(18) =4473784821a(19) =5364666165a(20) =5515718205a(21) =11175736334a(22) =14408460165a(23) =18026319710a(24) =20106993885a(25) =20357733129

External references