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%I #11 Jul 03 2021 16:28:59
%S 1,3,7,9,21,27,57,63,81,171,189,203,243,333,399,513,567,609,729,999,
%T 1083,1197,1539,1701,1827,2187,2331,2943,2997,3249,3591,4617,5103,
%U 5481,5887,6327,6561,6993,7581,8829,8991,9567,9747,10773,11571,11977
%N Numbers k that divide s(k), where s(1)=1, s(j)=7*s(j-1)+j.
%Y s(n) = A014830(n).
%K nonn
%O 1,2
%A _N. J. A. Sloane_, _Olivier Gérard_
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