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 A235641 #15 Aug 06 2014 16:04:52 %S A235641 0,18,81,1539,17661,135489 %N A235641 Number of n-digit lunar primes obtained by promoting the binary templates. %H A235641 D. Applegate, M. LeBrun and N. J. A. Sloane, <a href="http://arxiv.org/abs/1107.1130">Dismal Arithmetic</a> [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing], see column (c) of Table 2, p. 10. %H A235641 <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a> %Y A235641 Cf. A087062, A087097, A087636. %K A235641 nonn,base,more %O A235641 1,2 %A A235641 _Arkadiusz Wesolowski_, Apr 20 2014