Numbers n such that the arithmetic, geometric and harmonic means of phi(n) and sigma(n) are all integers.

A065146

Numbers n such that the arithmetic, geometric and harmonic means of phi(n) and sigma(n) are all integers.

Terms

    a(0) =1a(1) =248a(2) =264a(3) =418a(4) =477a(5) =1485a(6) =3080a(7) =3135a(8) =3596a(9) =3828a(10) =5396a(11) =10098a(12) =12648a(13) =20026a(14) =21318a(15) =22152a(16) =23374a(17) =24882a(18) =35074a(19) =35343a(20) =39105a(21) =41656a(22) =44660a(23) =49938a(24) =55154a(25) =56536a(26) =61344a(27) =71145a(28) =74613a(29) =86304

External references