Numbers n such that n is not the power of a prime and such that for every prime divisor p of n, p-1 divides n-1.

A087442

Numbers n such that n is not the power of a prime and such that for every prime divisor p of n, p-1 divides n-1.

Terms

    a(0) =45a(1) =225a(2) =325a(3) =405a(4) =561a(5) =637a(6) =891a(7) =1105a(8) =1125a(9) =1225a(10) =1377a(11) =1729a(12) =2025a(13) =2465a(14) =2821a(15) =3321a(16) =3645a(17) =3751a(18) =3825a(19) =4225a(20) =4961a(21) =5589a(22) =5625a(23) =6517a(24) =6525a(25) =6601a(26) =7381a(27) =8125a(28) =8281a(29) =8625

External references