This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A159064 #6 May 09 2024 18:52:53 %S A159064 199,1061,1091,1109,1181,1601,1669,1811,1901,10061,10069,10091,10909, %T A159064 11909,16001,18691,18911,19001,19661,19801,101119,101611,106681, %U A159064 106699,106861,108881,109609,109891,110119,110881,110989,111119,111869,111919,116911 %N A159064 Emirps which remain primes when rotated by 180 degrees on a digital clock display. %C A159064 The sequence contains all bemirps A048895. %e A159064 1109 is an emirp (prime, and the reverse 9011 is also prime), it contains only digits 0,1,6,8 or 9 and can be rotated to form 6011, which is also prime. So 1109 is in the sequence. %Y A159064 Cf. A145750. %K A159064 base,nonn %O A159064 1,1 %A A159064 _Lekraj Beedassy_, Apr 04 2009 %E A159064 18691 and 18911 inserted, extended by _R. J. Mathar_, Apr 05 2009