Numbers k that divide 5^k + 2.

Terms

a(0) =1a(1) =7a(2) =51373a(3) =78127a(4) =138943a(5) =620299a(6) =2842933a(7) =137422693a(8) =2259290321a(9) =413879131637a(10) =434757575329a(11) =915535274009