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%I #8 Aug 20 2021 22:08:50
%S 1,3,9,27,57,81,171,243,333,513,729,999,1083,1539,2187,2943,2997,3249,
%T 4617,6327,6561,8829,8991,9567,9747,12321,13851,18981,19683,20577,
%U 21897,23883,26487,26973,28701,29241
%N Numbers k such that k divides s(k), where s(1)=1, s(j)= s(j-1) + j*7^(j-1).
%K nonn
%O 1,2
%A _Olivier Gérard_
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