Numbers x such that sigma(x)=sigma(T(x)), where sigma(x) is the sum of the divisors of x and T(x) the transform defined in A243993.

A245468

Numbers x such that sigma(x)=sigma(T(x)), where sigma(x) is the sum of the divisors of x and T(x) the transform defined in A243993.

Terms

    a(0) =204a(1) =395a(2) =506a(3) =583a(4) =612a(5) =627a(6) =718a(7) =795a(8) =975a(9) =2012a(10) =3188a(11) =3690a(12) =7198a(13) =7881a(14) =11472a(15) =21280a(16) =34040a(17) =41310a(18) =49021a(19) =53314a(20) =94363a(21) =107348a(22) =128616a(23) =201804a(24) =203912a(25) =204204a(26) =204435a(27) =207390a(28) =315244a(29) =321010

External references