Odd numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.

A387159

Odd numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.

Terms

    a(0) =1a(1) =63a(2) =135a(3) =351a(4) =875a(5) =891a(6) =999a(7) =1647a(8) =1859a(9) =1971a(10) =4239a(11) =5211a(12) =7479a(13) =8451a(14) =10719a(15) =11367a(16) =12339a(17) =14607a(18) =16317a(19) =16551a(20) =17847a(21) =18171a(22) =19791a(23) =20439a(24) =22103a(25) =23679a(26) =26919a(27) =27951a(28) =29511a(29) =31131

External references