%I #6 Jun 23 2015 11:21:36
%S 4,10,15,35,116,242,396
%N Fixed points in A083275.
%C Numbers n such that A083275(n) = n.
%C a(8) > 1200. - _Giovanni Resta_, Jun 23 2015
%o (PARI) v=[3];n=1;while(#v<300,s=-1+n*prod(i=1,#v,v[i]);if(ispseudoprime(s)&&!vecsearch(vecsort(v),n),v=concat(v,n);if(n==#v,print1(n,", "));n=0);n++)
%Y Cf. A083275.
%K nonn,hard,more
%O 1,1
%A _Derek Orr_, Jun 22 2015
%E a(7) from _Giovanni Resta_, Jun 23 2015