Exponential (2,3)-perfect numbers: numbers m such that esigma(esigma(m)) = 3m, where esigma(m) is the sum of exponential divisors of m (A051377).

A328132

Exponential (2,3)-perfect numbers: numbers m such that esigma(esigma(m)) = 3m, where esigma(m) is the sum of exponential divisors of m (A051377).

Terms

    a(0) =300a(1) =2100a(2) =3300a(3) =3900a(4) =5100a(5) =5700a(6) =6900a(7) =8700a(8) =9300a(9) =11100a(10) =12100a(11) =12300a(12) =12900a(13) =14100a(14) =15900a(15) =17700a(16) =18300a(17) =20100a(18) =21300a(19) =21900a(20) =23100a(21) =23700a(22) =23760a(23) =24900a(24) =26700a(25) =27300a(26) =29100a(27) =30300a(28) =30900a(29) =32100

External references