Integers m such that phi(m) is equal to the sum of (the product of prime factors) and (the product of exponents) of m-1.

A039777

Integers m such that phi(m) is equal to the sum of (the product of prime factors) and (the product of exponents) of m-1.

Terms

    a(0) =2a(1) =5a(2) =21a(3) =45a(4) =285a(5) =765a(6) =27645a(7) =196605a(8) =41067645a(9) =72787965a(10) =250871805a(11) =4295098365a(12) =12884901885a(13) =23307153405a(14) =172130669565

External references