|
%I #5 Mar 13 2024 10:15:17
%S 204,2856,16536
%N If n = Product p_i^r_i let Uphi(n) = Product(p_i^r_i - 1). Call (x,y) a square unitary phi amicable pair if Uphi(x)^2 = Uphi(y)^2 = x^2-y^2. Sequence gives x values for square unitary phi amicable pairs.
%C There may be no further terms.
%e Factorizations : 2^2*3*17, 2^3*7*3*17, 2^3*13*3*53
%Y Cf. A047994. See A099106 for y values.
%K nonn,bref,more
%O 1,1
%A _Yasutoshi Kohmoto_
|
