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 A099609 #31 May 08 2018 15:11:55 %S A099609 2,3,3,5,5,7,11,13,17,19,29,31,41,43,59,61,71,73,101,103,107,109,137, %T A099609 139,149,151,179,181,191,193,197,199,227,229,239,241,269,271,281,283, %U A099609 311,313,347,349,419,421,431,433,461,463,521,523,569,571,599,601,617,619,641 %N A099609 Naive list of twin primes (A077800 prefixed by 2, 3). %D A099609 M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 870. %H A099609 Michael De Vlieger, <a href="/A099609/b099609.txt">Table of n, a(n) for n = 1..10000</a> %H A099609 M. Abramowitz and I. A. Stegun, eds., <a href="http://www.convertit.com/Go/ConvertIt/Reference/AMS55.ASP">Handbook of Mathematical Functions</a>, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy]. %H A099609 J. P. Delahaye, <a href="http://www.lifl.fr/~delahaye/SIME/JPD/PLS_Nb_premiers_jumeaux.pdf">Premiers jumeaux: freres ennemis?</a> [Twin primes: Enemy Brothers?], Pour la science, No. 260 (Juin 1999), 102-106. %H A099609 J. C. Evard, <a href="http://web.archive.org/web/20110726012847/http://www.math.utoledo.edu/~jevard/Page012.htm">Twin primes and their applications</a> [Cached copy on the Wayback Machine] %H A099609 J. C. Evard, <a href="/A077800/a077800.html">Twin primes and their applications</a> [Local cached copy] %H A099609 J. C. Evard, <a href="/A077800/a077800.pdf">Twin primes and their applications</a> [Pdf file of cached copy] %H A099609 Wikipedia, <a href="http://www.wikipedia.org/wiki/Twin_prime">Twin prime</a> %t A099609 Select[Partition[#, 2, 1] &@ Prime@ Range@ 120, First@ Differences@ # <= 2 &] // Flatten (* _Michael De Vlieger_, Mar 18 2017 *) %Y A099609 Cf. A070076, A077800. See A001097 for another version. %K A099609 nonn %O A099609 1,1 %A A099609 _N. J. A. Sloane_, Nov 18 2004