Least non-balanced x (i.e., not in A020492) such that sigma(p(n),x)/phi(x) is an integer, where p(n) = n-th prime.

A078540

Least non-balanced x (i.e., not in A020492) such that sigma(p(n),x)/phi(x) is an integer, where p(n) = n-th prime.

Terms

    a(0) =22a(1) =38a(2) =46a(3) =295a(4) =235a(5) =749a(6) =3687a(7) =6128a(8) =1415a(9) =4254a(10) =10451a(11) =8351a(12) =334a(13) =4511a(14) =3398a(15) =1286a(16) =148870a(17) =11015a(18) =35519a(19) =10239a(20) =14072a(21) =76088a(22) =5991a(23) =718a(24) =11654a(25) =30761a(26) =7431a(27) =20993a(28) =700654a(29) =22169

External references