Numbers k that divide 5^k + 3.

Terms

a(0) =1a(1) =2a(2) =4a(3) =14a(4) =628a(5) =11524a(6) =16814a(7) =188404a(8) =441484a(9) =2541014a(10) =3984724a(11) =172315684a(12) =208268941a(13) =40874725514a(14) =280454588548a(15) =489850370956