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%I #27 Aug 28 2021 17:59:28
%S 1,2,226,25538,2885794,326094722,36848703586,4163903505218,
%T 470521096089634,53168883858128642,638026606623638426,
%U 6008083875968536546,6789793858544278594
%N Positive integers k such that k | (15^k + 1).
%C No other terms below 10^19.
%C Some larger terms: 15878365178317113816706, (15^226+1)/238519527370488646998297200411598927857 (228 digits). - _Max Alekseyev_, Aug 03 2011
%Y Column k=15 of A333429.
%K nonn,more
%O 1,2
%A _Robert G. Wilson v_
%E a(6)-a(13) from _Max Alekseyev_, Oct 02 2010, Aug 03 2011, Sep 17 2017