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Numbers k that divide 9^k + 7^k.
0

%I #9 Aug 09 2021 01:32:48

%S 1,2,10,26,50,130,250,338,650,1250,1690,3250,4010,4394,5050,6250,8450,

%T 16250,20050,21970,25250,31250,33826,42250,48698,52130,57122,65650,

%U 81250,100250,109850,126250,144610,156250,169130,211250,228826,243490

%N Numbers k that divide 9^k + 7^k.

%K nonn

%O 1,2

%A _David W. Wilson_