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%I #7 Jul 14 2020 23:49:16
%S 4,20,36,52,68
%N Numbers n such that the permanent of the character table of the dihedral group D_n is not zero.
%C Probably these are the numbers of the form 16m+4.
%H Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/NonRecursions.html">Non Recursions</a>
%Y Cf. A017089.
%K nonn,more
%O 1,1
%A Yuval Dekel (dekelyuval(AT)hotmail.com), Jul 24 2003