Odd composite squarefree numbers k such that r = 2*(p - 2 + k/p)/(p-1) is an integer for each prime divisor p of k.

A180248

Odd composite squarefree numbers k such that r = 2*(p - 2 + k/p)/(p-1) is an integer for each prime divisor p of k.

Terms

    a(0) =15a(1) =91a(2) =435a(3) =561a(4) =703a(5) =1105a(6) =1729a(7) =1891a(8) =2465a(9) =2701a(10) =2821a(11) =3367a(12) =5551a(13) =6601a(14) =8695a(15) =8911a(16) =10585a(17) =11305a(18) =12403a(19) =13981a(20) =15051a(21) =15841a(22) =16471a(23) =18721a(24) =23001a(25) =26335a(26) =29341a(27) =30889a(28) =38503a(29) =39865

External references