%I

%S 9,41,51,109,483

%N Numbers n such that 89^n-88 is prime.

%C Related to hyperperfect numbers of a certain form.

%H J. S. McCranie, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL3/mccranie.html">A study of hyperperfect numbers</a>, J. Int. Seqs. Vol. 3 (2000) #P00.1.3.

%o (PARI) isok(n) = isprime(89^n-88); \\ _Michel Marcus_, Mar 12 2016

%K nonn,more

%O 1,1

%A _Jud McCranie_