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%I #18 Apr 03 2023 10:36:11
%S 2,1,2,2,1,14,40,52,228,482,1592,4758,15810,53202,197429,725196
%N Number of dihedral primes with n digits.
%H C. K. Caldwell, The Prime Glossary, <a href="https://t5k.org/glossary/page.php?sort=DihedralPrime">Dihedral Prime</a>
%H C. Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_039.htm">Source</a>
%Y Cf. A038136, A048662, A134996.
%K nonn,base,more
%O 1,1
%A _Felice Russo_
%E a(1) corrected by _Patrick Capelle_, Feb 06 2008
%E a(11)-a(16) from _Hiroaki Yamanouchi_, Sep 04 2014
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