Numbers k such that sigma(k)/phi(k) = 25/16.

Terms

a(0) =40859a(1) =48505a(2) =54385a(3) =121771a(4) =156125a(5) =565607a(6) =1154419a(7) =1219933a(8) =1294363a(9) =2448397a(10) =3590461a(11) =9710975a(12) =16067363a(13) =16069573a(14) =17984515a(15) =19013455a(16) =21341755a(17) =25804115a(18) =26515223a(19) =27656155a(20) =29655415a(21) =30372605a(22) =32101255a(23) =34467653a(24) =36546355a(25) =38043943a(26) =38645981a(27) =39559219