%I

%S 1,13,169,2197,14209,28561,184717,371293,2401321,4826809,15530437,

%T 31217173,62748517,130238329,178895977,201895681,405823249,815730721,

%U 1693098277,2325647701,2422762381,2624643853,4286414821,5275702237

%N Numbers n such that n | 9^n + 4^n.

%K nonn

%O 1,2

%A _David W. Wilson_

%E Complete up to 33000000.